Asked by marlon

Mark has 5/6 as many blue marbles as red marbles. After buying 20 more marbles of each color, he has 7/8 as many blue marbles than red marbles.How many of each color did Mark had at first?

Answers

Answered by Steve
red: 6x
blue: 5x

(5x+20)/(6x+20) = 7/8

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