Question

A shopkeeper earns a profit of of 15% after selling a book at 20% discount on the printed price . What is the ratio of the cost price and the printed price of the book.​

Answer 1

Step-by-step explanation:

let CP be 100

SP=100+15% of 100=115

let marking price be X

then 90% of X=115

x=(115x100)/90

zero in the numerator and denominator will get cancelled.

rs.1150/9

100:1150/9

900:1150

18:23

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