Question

A man saves 20% of his monthly salary. if on account of increase in prices, he is to increase his monthly expenses by 20%, he is only able to save rs. 20 per month. what is his monthly salary?

Answer 1

Let the man salary =x
he saves 20%of x= x/100 *20
= x/5
he expenses=x-x/5
4x/5
when he expenses more 20% then his monthly expenses=4x/5/100 *20+ 4x/5
= 4x/25+4x/5
B/Q
x-(4x/25+4x/5)=20
=x-24x/25=20
x/25=20
x=500
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