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Question 63
By paying ₹20 less of the marked price of an article, a man gets 25% discount. The total amount that he has paid (in ₹) is:
Solution
By paying ₹20 less of the marked price of an article, a man gets 25% discount.
Let's assume the market price of an article is 100y.
selling price = 100y of (100-25)%
(100y-20) = 100y of 75%
100y-20 = 75y
100y-75y = 20
25y = 20
y = 0.8
The total amount that he has paid = selling price = (100y-20)
= $$(100\times0.8-20)$$
= 80-20
= ₹60
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