In the new budget the price of Petrol rose by 20%. By how much percent must a person reduce his consumption so that his expenditure on it does not increase? Choose the correct option.
A) 16.67%  B) 25%  C) 20.45%  D) 31.56%  E) 40%
Reduce in consumption = R/(100+R) *100% = 20/120 *100 = 16.67%   16.67%nswer is 16.67%
<result>A</result>
In the new budget the price of Petrol rose by 20%. By how much percent must a person reduce his consumption so that his expenditure on it does not increase?