Question

if every child took 12 apples,there would be three left.if each childtook 9 apples,there would be 21 apples left how many apples are there.

Answer 1

Multiples of 12 : 12 , 24 , 36 , 42 , 60 , 72 , 84 , 96 , 108 , 120
3 left  (+3)        : 15 , 27 , 39 , 45 , 63 , 81 , 87 , 99 , 111 , 123

Multiples of 9   : 09 , 18 , 27 , 36 , 45 , 54 , 64 , 72 , 81 , 90
21 left  (+21)    : 30 , 39 , 48 , 57 , 66 , 75 , 85 , 93 , 102, 111

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Answer : There are 111 apples 
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