Question

7. A shopkeeper allows a discount of 10% to his customers and still gains 20%. Find the marked price
the article which costs 450.

EXPLAIN IT TOO.
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Answer 1

ANSWER :- rupees 600

EXPLANATION:-Hi,

Let the marked price of an article be 'X'

Shopkeeper allows a discount of 10%,

Selling Price = Marked Price - Discount

  = X - 10%X

= X(1 - 1/10)

= 9X/10

Given that shopkeeper gains 20 %,

Gain Percentage = ( Selling Price - Cost Price )/Cost Price * 100

20 = [(9X/10 -450)/450]*100

9X/10 - 450 = 90

9X/10 = 540

X = 600

Hence, the Marked Price of the article is Rs 600.

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Answer 2

Refer to the attached image ☺️