Question

11. A shopkeeper earns a profit of 12% on selling a
book at 10% discount on the printed price. The
ratio of the cost price and the printed price of
the book is:
(a) 45:56
(b) 45:51
(c) 47:56
(d) 47:51​

Answer 1

Answer:

the answer will be 45:51

Answer 2

Answer:

(A) 45 : 56

Step-by-step explanation:

Let the CP of book = Rs.x

Then, SP of book = (100+12)×x100=112x100

Now. the printed price = Rs.y

Then, after discount, the SP

= (100−10)×y100=90y100

Since, both SP are same.

Then, 112x100=90y100=xy=4556