Paulson spends 75% of his income. His income is increased by 20% and he increased his expenditure by 10%.Find the percentage increase in his savings .
Pick.
A) 25
B) 35
C) 50
D) 20
E) 15
Let the original income=$100. Then, expenditure=$75 and   savings =$25   New income =$120, New expenditure =   $((110/100)*75)=Rs.165/2   New savings = $(120-(165/2)) = $75/2   Increase in savings = $((75/2)-25)=$25/2   Increase %= ((25/2)*(1/25)*100)= 
<gadget id="calculator">((25/2)*(1/25)*100)</gadget>
<output>50</output>
50%.   Answer 50) 50.
<result>C</result>
Paulson spends 75% of his income. His income is increased by 20% and he increased his expenditure by 10%.Find the percentage increase in his savings .