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The ratio of Mario's money to Luigi's money was 9:4 before Mario went to the store. After Mario spent $84 on jackets, the ratio became 1:2. How much money did Mario have at first?

 Apr 8, 2021
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m/l = 9/4

4m = 9l

(m-84)/l = 1/2

2m-168 = l

4m = 9(2m-168)

4m = 18m -1512

14m = 1512

m = 108

 

I hope this helped. :))

=^._.^=

 Apr 8, 2021

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