Q. The difference between a discount of 40% on Rs. 500 and two successive discounts of 30% and 10% on the same amount is:
Answer:
Rs. 15
Notes: Single equivalent discount of two consecutive discount of 30% and 10%.
$ = 30+10-\frac{30\times 10}{100} = 37\%$
∴ Required difference = 40% of 500 – 37% of 500
$ = 500\times \frac{3}{100} = 15\ Rs.$
Hence option [C] is correct answer.