9th Grade Math Rational Expressions Word Problems

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

Ninth Grade

Rational expressions in ninth grade.

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Rational Expressions Word Problems

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Ninth Grade: Rational Expressions Word Problems

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 ...
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 ...
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
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 ...
multiplying rational expressions
Maria's favorite candy bar has 230 claories. the nutrition label sates that 7/8 of the calories come from ...
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 ...
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 ...
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 ...
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...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
The reciprocal of a number
The reciprocal of a number plus the reciprocal of three times the number equals 1/3
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 ...

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This Ninth Grade math page lists word problems on rational expressions topic.