7th Grade Math Expressions Word Problems

This page is for seventh grade math students who need help, and for teachers and tutors who are looking for word problems on expressions.

Expressions Word Problems

Many students find expressions difficult. They feel overwhelmed with expressions homework, tests and projects. And it is not always easy to find expressions tutor who is both good and affordable. Now finding expressions help is easy. For your expressions homework, expressions tests, expressions projects, and expressions tutoring needs, TuLyn is a one-stop solution. You can master hundreds of math topics by using TuLyn.

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Erica hiked up a mountain trial
Erica hiked up a mountain trial at 3km/h and returned at 4k/h. The entire trip took five hours 10 min including the half an hour she spent at the ...
Mr. Jenkins can dig a ditch
Mr. Jenkins can dig a ditch in one hour less then his son. Working together, they can do the job in 2\3 hour. How long does it take for ...
Crane A can unload the container ship
Crane A can unload the container ship in 10 hours, and crane B can unload it in 14 hours. Crane A started to unload the ship at noon and was joined by crane B at 2 P....
Two numbers are in the ratio
Two numbers are in the ratio 5:2. One half of their sum is 10 and a ...
A marketing manager travels
A marketing manager travels 1080 miles in a corporate jet and then an additional 240 miles by car.  If the car ride takes one hour longer than the jet ride takes, and if the rate of the jet is 6 times the rate of the ...
simplifying rational expressions
Mario can do the work in X hours. Luigi takes one more hour than Mario to do the work. Together they finish the work in 100 ...
Bob`s swimming pool has a length
Bob's swimming pool has a length of w+14 and a width of w+8. There is a walkway around the pool that is 4 feet ...
Melanie can paint a certain barn
Melanie can paint a certain barn by herself in x days. Her helper Melissa can paint the same barn by herself in 2 x days. Write a rational expression for the fraction of the barn tht they complete in one day by working together. Evaluate the expression for x =5
For two consecutive integers
For two consecutive integers, the sum of the larger and five times the smaller
Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: w=Cr-2, where C is a constant, and r is the distance that the object is from the center of the earth.

a. Solve the equation  for r.

b. Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the earth.)

c. Use the value of C you found in the previous question to determine how much the object would weigh in

i. Death Valley (282 feet below sea level)

ii. The top of Mt McKinley (20,320 feet above sea level)
A part of Death Valley, near bad water
A part of Death Valley, near bad water, lies 282 ft below sea ...
A soccer field in a city park is rectangular
A soccer field in a city park is rectangular. The length of the field is 120 yards and the width of the field is 60 ...
multiplying rational expressions
Maria's favorite candy bar has 230 claories. the nutrition label sates that 7/8 of the calories come from ...
At a well known university
At a well known university, 1/4 of the undergraduate students commute, and 1/3 of the graduate students commute. One-tenth of the undergraduate students drive more than 40 miles daily, and 1/6 of the graduate students drive more than 40 miles daily. If there are twice as many underrgraduate students as there are graduate ...
The strength of a medication over time is represented by the equation y=200(1.5)-x, where x represents the number of hours since the medication was taken and y represents the number of micrograms per milimeter left in in the blood. After 4...
Jaime bought a case of concert T-shirts
Jaime bought a case of concert T-shirts for \$450. She kept two for herself and sold the rest for \$560, making a profit of \$10 on each ...
Jan invested \$3600
Jan invested \$3600, part at 8% and the rest at 7%. If the total income from the investments was \$274...
Jamie buys a square tablecloth. The package label declares, the area of the cloth is 800 sq inches. What is the length of a side of the ...
If the square root of 2 is less than 6 times a number
If the square root of 2 is less than 6 times a number is divided by 2 less than the number, the quotient is 2...
Kristin can type a 50 page paper
Kristin can type a 50 page paper in 8 hours. Last month Kristin and Courtney together typed a 50 page paper in 6 ...
A rectangle is 7 times as long as it is ...
The additive inverse of a number
The additive inverse of a number divided by twelve is the same as one less than three times its ...
it takes three hours for a pipe
it takes three hours for a pipe to fill a tank of water if the tank does not leak. Our tank has a crack that draines the tank in 5 ...
What is the square root of 48 minus the square root of 75?
Working alone it takes George 5 hours
Working alone it takes George 5 hours to decorate the hall for an event. Working alone it takes Wanda 4 hours to decorate the hall for an ...
An airplane descends 4 feet every second
An airplane descends 4 feet every second prior to ...
One person says that numbers in radicals
One person says that numbers in radicals are useless because they do not have any real world relevance. Give a convincing practical example to show this person that they are very practical and we need ...
What is the square root
What is the square root of 49 multiplied by the square root of 9?
Mickey and Minnie Mouse can eat a piece of cheese
Mickey and Minnie Mouse can eat a piece of cheese in 9 minutes. Mickey alone can eat the cheese in 16 ...
20 more than a number
20 more than a number tripled is100...
A typist types 45 words per minute
A typist types 45 words per ...
Monica loved the book Wing High, Gooftah
Monica loved the book Wing High, Gooftah. She read the last 28 chapters this past weekend. Seven of the chapters were less than 3 pages ...
A women buys 3 board games
A women buys 3 board games for \$107.10, including tax. If each board game cost \$34...
It takes doug 6 hours to roof the house
It takes doug 6 hours to roof the house. If his son helps it takes 4 ...
A bronze alloy consists of copper and tin
A bronze alloy consists of copper and tin in the ratio of 11 to 2, respectively. If the bronze weighs 52...
algebraic expressions
111.40 is 60% of x
A train moving at 75mph has a destination
A train moving at 75mph has a destination that is 150mi away. The train breaks down and has to be repaired and has delayed the trains schedule by six hours. to get to the destination on ...
Andy is putting together alien toys
Andy is putting together alien toys called Zergs and Borgs for the display window in a toy store. He has a box of alien toy body parts that contain 45 heads and 55 feet. Each Zerg must have one head and three feet. Each Borg must have four heads and two feet. How many Zergs and how many Borgs can he make if he must use all the heads and feet in the box?
Zach, Kaitlyn and Josh went trick or treating
Zach, Kaitlyn and Josh went trick or treating in different spots. Josh got twice as many goodies as ...
simplifying expressions
Beatrice owes \$8 to each of her 4 friends. Using ...
algebraic expressions
47 less than the product of y and 7.
Ms Forsberg usually swims 150 laps a day. Today she decides she is going to swim p more laps. Write an expression for how many laps she will swim?

She swims p extra laps every day for 7 ...
How much is the tax
How much is the tax on a \$ 50 video game, if the tax rate is 5%
Two thirds fo a number increased by two
Two thirds fo a number increased by two is ...
It takes one man 8 hours to do a certain job
It takes one man 8 hours to do a certain job. After the first man has been at work for 3 hours, another man is put to work. The two men then complete the job in 2 more ...
Jim can run 5 miles per hour
Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 15 milkes with the wind, and in the same amount of time runs 67 miles against the ...
Your recipe calls for 2 teaspoons of baking powder
Your recipe calls for 2 teaspoons of baking powder but all you have is baking soda. You know that you can substitute two parts cream of tartar and one part baking ...
One water pipe can fill a tank
One water pipe can fill a tank in 90 minutes while a second pipe can fill the tank in 60 ...
On a three day hike Matthew hiked twice as many miles
On a three day hike Matthew hiked twice as many miles on the first day as on the second day. on the third day he hiked 5 miles. Carlos hiked 5 miles on the first day and three times as many miles on the saecond day as on the third
A. write and simplify an expression for the total number of miles Matthew hiked.
B. Matthewhiked 6 miles on the second day. How many miles did Matthew hike in all.
C. If Carlos hiked 5 miles on the third ...
The reciprocal of a number
The reciprocal of a number plus the reciprocal of three times the number equals 1/3
If one person counts
If one person counts by 4s to 80 and another person counts by 8s to 80...

Is there a word problem involving rational algebraic expressions?
December 16, 2008, 5:13 am

How Others Use Our Site

To learn how to work word problems, algebraic expressions with variables, rates,y=mx+b or y=mx-b, and knowing what these variables stand for on a graph, fractions conversions etc.
I hope it will help me get an understanding of problem solving by using algebraic expressions.