If Aslam sold a book in Rs. 118 and he got 50% profit then what will be the cost price of the book?

A) 78.66

B) 77.66

C) 67.77

D) 79.66

Step-by-step explanation:

let the CP be x the,

SP= (100+profit /100)×CP

SP=(100+50/100)×x

SP=(150/100)x

SP=1.5x

x=118/1.5

x=78.66

therefore CP=78.66