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Question

By giving a discount of 10% on the marked price of Rs 1,100 of a sewing machine a dealer gains 10%, then the cost price is

A
Rs 900
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B
Rs 950
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C
Rs 1,000
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D
Rs 1,050
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Solution

The correct option is A Rs 900
Market price =1100
Discount of 10% is given on marked price,
So selling price will be=11001100×10100
=(1100110)
=990
Even after giving discount of 10%, dealer gains 10% on cost price,
If selling price is 110, cost price will be 100
If selling price is 990, cost price will be=100110×990
=900
Cost price is Rs900

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