1. A shopkeeper marks up his goods by 40% and gives a discount of 15%. If he uses a faulty balance that reads 1000 g for 800 g, what is his net profit percentage?
A) 45%B) 42.5%C) 50%D) 48.75%
✓ Correct Answer: Option D
Explanation: <strong>Explanation:</strong> Let CP of 1000g = 100. MP = 140. SP after 15% discount $= 140 \times 0.85 = 119$. He gives 800 g which costs him 80. Profit = 119 - 80 = 39. Profit $% = (39/80) \times 100 = 48.75%$.