The Shopkeeper increased the price of a product by 15% so that customer finds it difficult to purchase the required amount. But somehow the customer managed to purchase only 70% of the required amount. What is the net difference in the expenditure on that product?
Choose the most appropriate option: A) A)12.5% B) B)13% C) C)11.5% D) D)14% E) E)15%
Quantity X Rate = Price   1 x 1 = 1   0.7 x 1.15 = 0.805   Decrease in price = (0.115/1) × 100 = 11.5%   11.5%)
<result>C</result>
The Shopkeeper increased the price of a product by 15% so that customer finds it difficult to purchase the required amount. But somehow the customer managed to purchase only 70% of the required amount. What is the net difference in the expenditure on that product?