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ML Aggarwal Solutions Class 8 Mathematics Solutions for Percentage Exercise 7.3 in Chapter 7 - Percentage
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A notebook is marked at ₹ 30. Find the price a student pays for a dozen notebooks if he gets a 15% discount
Answer:
It is given that
M.P. of one notebook = ₹ 30
M.P. of one dozen notebooks = 30 × 12 = ₹ 360
Discount = 15%
We know that
Amount of discount = 15% of M.P.
It can be written as
= 15% of ₹ 360
By further calculation
= (15/100 × 360)
So we get
= (15/10 × 36)
= (3/2 × 36)
On further simplification
= 3 × 18
= ₹ 54
Price a student pays for a dozen notebooks = 360 – 54 = ₹ 306
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