Jack's first weight increased by 20% and then his new weight decreased by 25%. His final weight is what percent of his beginning weight?

Lets suppose his initial weight was 60 kilograms

A gain of 20% would make his new eight 60 + 20*60/100

= 60 + 12

= 72 kg

he lost 25% of this:-

= 72 - 25 * 72/100 = 54 kg

This = (54/60) * 100 = 90% of his beginning weight Answer