1.

Find the number which when increased by 12% becomes 728

Answer»

LET the NUMBER be x
X+12%ofx=728
X+12/100×x=728
X+12x/100=728
100x/100+12x/100=728
112x/100=728
112x=728×100
112x=72800
x=72800/112
x=650
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