In the new budget the price of cheese rose by 25%. By how much percent must a person reduce his consumption so that his expenditure on it does not increase?  Choose the correct choice from the following choices:
A) 20%
B) 9.1%
C) 10.9%
D) 12.6%
E) 15%
Reduce in consumption = R/(100+R) *100% = 25/125 *100= 
<gadget id="calculator">25/125 *100</gadget>
<output>20</output>
20%   20%nswer is 20%
<result>A</result>
In the new budget the price of cheese rose by 25%. By how much percent must a person reduce his consumption so that his expenditure on it does not increase?