a) Rs. 15
b) Rs. 0
c) Rs. 20
d) Rs. 10
Answer: a
Explanation: 40% discount on 500 = $$\frac{{40 \times 500}}{{100}}$$ = Rs. 200
Two successive discount on 500,
= 30% of 500 + 10% of (500 – 30% of 500)
= 150 + 10% of 350
= 150 + 35 = Rs. 185
Difference in Discount = 200 – 185 = Rs. 15
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