When the price of a toy was increased by 20 % of the number of toys sold was decreased by 15 %. What was the effect on the sales of the shop?

A. 4 % increase
B. 4 % decrease
C. 2 % increase
D. 2 % decrease
Explanation:
Original cost of each toy Rs. 100 and number originally sold be 100
Original sale proceed = Rs. (100 × 100) = Rs. 10000
New sale proceed = Rs . (120 ×85) = Rs. 10200
Increase % = (200/10000 × 100)% = 2%