Aman spends 75% of his income.If his income increases by 28% and his expenditure increases by 20%, then what is the increase or decrease percentage in his savings ?

52 % increase

Let income of a man be 100 Rs.

Expenditure = 75 Rs.

Saving = 25 Rs.

New income = 100 × \(\frac{128}{100}\) = 128 Rs.

New expenditure = 75 × \(\frac{120}{100}\) = 90 Rs.

New saving = 128 - 90 = 38 Rs.

Percent increase in saving =  \(\frac{13}{25}\) × 100

= 52%