Homework Help: Algebra

Posted by Nick on Thursday, October 4, 2012 at 9:55pm.

A jar contains red, blue and yellow marbles.The number of red marbles is ten more than the number of yellow marbles and the number of blue marbles is double the number of yellow marbles. If the probability of choosing a yellow marble is one-fifth , how many marbles are in the jar?

Algebra - Reiny, Thursday, October 4, 2012 at 10:07pm
yellow marbles ---- x
blue marbles ------ 2x
red marbles ------- x+10

total = 4x + 10

prob to choose a yellow = x/(4x+10) = 1/5

5x = 4x+10
x = 10

10 yellows , 20 blues, and 20 reds for a total of 50 marbles

Answer this Question

Related Questions

statistics - From a jar of marbles containg 4 blue marbles, 3 yellow marbles, 2 ...
Algebra - Out of jar with 100 marbles, 49 are blue marbles, 7 are green marbles...
Probabilities - A jar contains 2 red marbles, 3 green marbles, 4 blue marbles, ...
Math - 6 red marbles 5 yellow marbles and 4 blue marbles. Write a fraction in ...
PLEASE HELP! - A jar contains 24 blue marbles, 16 red marbles, and 14 white ...
Statistics - 1.In a jar, suppose there are 3 blue marbles, 2 yellow marbles and ...
Math - One bag contains 5 red marbles, 4 blue marbles, and 3 yellow marbles, and...
math - to identical jars are filled with equal amount of marbles. the marbles ...
Math - a bag contains 3 red marbles, 5 blue marbles, 2 yellow marbles, and 2 ...
math - Suppose a jar contains 5 red marbles and 33 blue marbles. If you reach in...

For Further Reading

First Name:
School Subject:
Answer: