In the new budget the price of milk rose by 20%. By how much percent must a person reduce his consumption so that his expenditure on it does not increase?
Options:
A) 7.5%	B) 9.1%	C) 10.9%	D) 16.67%	E) 15%
Reduce in consumption = R/(100+R) *100% = 20/120 *100 = 16.67%   Answer is 16.67%
<result>D</result>
In the new budget the price of milk rose by 20%. By how much percent must a person reduce his consumption so that his expenditure on it does not increase?