The C.P of 15 books is equal to the S.P of 18 books. Find the gain% or loss% ?



The C.P of 15 books is equal to the S.P of 18 books. Find the gain% or loss% ?

A. 16 2/3 % loss

B. 100/3 % loss

C. 50/3 % loss

D. 100/3 % loss

Answer : A. 16 2/3 % loss


Explanation:

    Let Cost Price per book = 1
    Cost of 15 books = 15
    15 is obtained by selling 18 books
    So Selling Price per book = 15 / 18
    CP - SP = Loss
    = 1 − 15 / 18
    = 1 / 6
    Percentage = 1 / 6 ∗ 100
    = 16 2/3 % Loss


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