give solution

Question

Antony goes to gym and loses 10% of his weight .His mother thinks he looks too skinny now.By how much percentage must Antony gain weight to return to his previous weight?

Answer 1

Well, you'd think it would be just 10%, right, since that's what he lost, but now the weight lost is compared to his new weight, so the percentage will go up.

 

Let's use real numbers. What if he weighed 150 lbs? 150(0.1) = 15 lbs lost. Now he weighs 150 - 15 = 135 lbs.

 

What percent of the 135 lbs he weighs now is the 15 lbs?

 

15/135 = 0.11 = 11%