Question

A boy spent 3/8 of his money and had 15Ghana cidis left. How much did he have

Answer 1

(5/8) m = 15

m = 15 * 8/5 = 3*8 = 24
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check
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3/8 * 24 = 9
24 - 9 = 15 sure enough

Answer 2

Remainder=1-3/8

=5/8
5/8=15
8/8=??
8/8×8/5×15

=24 Ghana cidis