A shopkeeper earns a profit of 12 on selling a book at a 10 discount on the printed price The ratio ...........

Quantitative Aptitude (CDS) Profit and loss

A shopkeeper earns a profit of 12% on selling a book at a 10% discount on the printed price. The ratio of the cost price to the printed price of the book is?

56/45

45/56

41/50

40/51

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Explanation:

let the C.P be Rs. 100
then S.P=Rs. 112
let the printed price be Rs. x
10% discount
then 90% of x=112
x=1120/9
ratio of cost price to printed price=100/(1120/9)
=90/112
=45/56