A storekeeper sells a book at 15% gain; Had he sold it for 18 more; he

1.	A storekeeper sells a book at 15% gain; Had he sold it for 18 more; he would have gained 18%. Find the cost price of the book.
Answer» Answer Rs 600 Step-by-step explanation: let the cost PRICE of the book be x selling it at 15% gain means selling price is (115x)/110 selling it at 18% gain means selling price is (118x)/110 difference between the two selling price is 18 hence =>(118x)/110-(115x)/110=18 => 3x/100=18 =>x=18100/3 =>x=600 hence cost price of the book is Rs 600.

A storekeeper sells a book at 15% gain; Had he sold it for 18 more; he would have gained 18%. Find the cost price of the book.

Answer»

Answer

Rs 600

Step-by-step explanation:

let the cost PRICE of the book be x

selling it at 15% gain means selling price is (115*x)/110

selling it at 18% gain means selling price is (118*x)/110

difference between the two selling price is 18

hence

=>(118*x)/110-(115*x)/110=18

=> 3*x/100=18

=>x=18*100/3

=>x=600

hence cost price of the book is Rs 600.

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A storekeeper sells a book at 15% gain; Had he sold it for 18 more; he would have gained 18%. Find the cost price of the book.​

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A storekeeper sells a book at 15% gain; Had he sold it for 18 more; he would have gained 18%. Find the cost price of the book.