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?
Q1. 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?
Answer: 2 % increase
Explanation: New revenue = 1.20 × 0.85 = 1.02 times original, so sales increase by 2%.