a child has certain amount of chocolate he ate 35% of the chocolate but still had 13 chocolates what is the number of chocolates child originally had?
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let x is total number of chocolates
x-35x/100=13
100x-35x/100=13
65x/100=13
x=13×100/65
x=20
x-35x/100=13
100x-35x/100=13
65x/100=13
x=13×100/65
x=20
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