Homework Help: Math,Ratio

Posted by Da S on Friday, February 3, 2012 at 12:25am.

the ratio of the number of coins Azam had to the number of coins Eddie had was 3:7.Eddie gave 42 coins to Azam and they ended up having the same number of coins.how many coins did each person have at first? pls sh

Math,Ratio - Reiny, Friday, February 3, 2012 at 8:23am
orginal:
number of coins for Azam = 3x
number of coins for Eddie = 7x

Eddie gave 42 coins to Azam
Azam now has 3x + 42
Eddie now has 7x - 42

but 7x - 42 = 3x + 42
4x = 84
x = 21

So at first
Azam had 3(21) or 63
Eddie had 7(21) = 147

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