Question
Two back-to-back discounts of 25% and 20% are equivalent
to a single discount of 'd%'. Calculate the value of '2d'Solution
ATQ,
Let the original cost be Rs. '100b'
Price after applying both discounts = 0.75 × 0.8 × 100b = Rs. '60b'
So, 'd' = [(100b - 60b) ÷ 100b] × 100 = 40
Required value = 40 × 2 = 80
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