In the new budget the price of wheat rose by 8%. By how much percent must a person reduce his consumption so that his expenditure on it does not increase?  Choose the most appropriate option:
A) 7.5 %	B) 7.41 %	C) 10.9 %	D) 12.6 %	E) 15 %

Rationale: reduce in consumption = r / ( 100 + r ) * 100 % = 8 / 108 * 100 = 7.41 % answer is b
Answer: B