sat math ratio question
How can we find the ratio of x+21 to y+21 if we know the ratio of x to y is 5:2 and the ratio of x+4 to y+4 is 7:4?
the answer is here
http://www.satmath4u.com/threads/89-sat-math-ratio-question
How can we find the ratio of x+21 to y+21 if we know the ratio of x to y is 5:2 and the ratio of x+4 to y+4 is 7:4?
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