Question

Que No. 4 & 5.............​

Answer 1

Answer:

ans 4 let C be the cost price per book.

Let S be the selling price per book.

Given: 30 C = 24 S

=> 5 C = 4 S

=> S = (5 / 4) C = 1.25 C = 125% of C

=> Profit margin is 25%

Ans 5 loss 10%