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A Shopkeeper Allows 20% Discount on the Advertised Prices of His Goods and Still Makes a Profit of 12% on His Cost Price. Calculate the Advertised Price of an Article on Which He Gains Rs.135. - Mathematics

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Question

A shopkeeper allows 20% discount on the advertised prices of his goods and still makes a profit of 12% on his cost price. Calculate the advertised price of an article on which he gains Rs.135.

Sum
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Solution

Let the C.P. of the goods = Rs.100
Profit = 12% 
∴ S.P.
= Rs.100 + 12% of Rs.100
= Rs.100 + Rs.12
= Rs.112
Discount = 20%
`"S.P."/"M.P." = 1 - "D"/(100)`

⇒ `(112)/"M.P." = 1 - (20)/(100)`

⇒ M.P. = `(112 xx 100)/(80)`
= Rs.140
Gain
= S.P. - C.P.
= Rs. (112 - 100)
= Rs.12
When gain is Rs.12, M.P. = Rs.140
When gain is Rs.135, M.P.
= `(140 xx 135)/(12)`
= Rs.1575.

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Chapter 2: Profit , Loss and Discount - Exercise 2.4

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Frank Mathematics [English] Class 9 ICSE
Chapter 2 Profit , Loss and Discount
Exercise 2.4 | Q 27
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