Sahil spends 75% of his pocket money and saves the rest. His pocket money is increased by 25% and he increases his expenditure by 20%, then the increase in saving in percent is:
A15%
B20%
C40%
D10%
Answer:
C. 40%
Read Explanation:
Let the income of Sahil be 100
Initial → Income : expenditure : saving
100 : 75 : 25
Finally,
Income = 100 × 125% = 125
Expenditure = 75 × 120% = 90
saving will be 125 – 90 = 35
increase in saving = [(35-25)/25]*100=40%