The difference between a discount of 40% and two successive discounts of 30% on a certain bill was ₹220. Find the amount of the bill (in ₹).
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Correct answer: D
Explanation
The correct answer is option 4 i.e. 2000.
Let the amount on the bill be 100x.
According to the given question,
100x × 60/100 - 100x × 70/100 × 70/100 = 220
⇒ 60x - 49x = 220
⇒ 11x = 220
⇒ x = 20
Amount on bill = 100x
⇒ 100 × 20 = 2000