Hari spends 50% of his income. His income is increased by 10% and he increased his expenditure by 5%. Find the percentage increase in his savings?  Choose the correct choice from the following answers
A) 10%	B) 15%	C) 20%	D) 25%	E) 30%
Let original income = $100   expenditure = $50   savings = $50   new income = $110   new expenditure = $105/100 * 50 = $105/2   New savings = 110 - 105/2 = $115/2   Increase in savings = 115/2 - 50 = $15/2   Increase % = 15/2 * 1/50 * 100= 
<gadget id="calculator">15/2 * 1/50 * 100</gadget>
<output>15</output>
15%   Answer is 15%
<result>B</result>
Hari spends 50% of his income. His income is increased by 10% and he increased his expenditure by 5%. Find the percentage increase in his savings?