On increasing the price of T.V. sets by 70%, their sale decreases by 20%. What is the effect on the revenue receipts of the shop ?	Options:	A) 4	B) 5	C) 36	D) 2	E) 7
Explanation:   Let the price be = Rs.100, and number of units sold = 100   Then, sale value = Rs.(100 × 100) = Rs.10000   New sale value = Rs.(170 × 80) = Rs.13600   Increase% = 3600/10000 × 100 = 36%   Answer: 36
<result>C</result>
On increasing the price of T.V. sets by 70%, their sale decreases by 20%. What is the effect on the revenue receipts of the shop ?