Question

Cost price of 30 books is equal to the selling price of 24 books. Find the gain percent.

Answer 1

Answer:

25%

Hello.

I hope this helps you.  Plz mark it Brainliest!!! :D  Have a great day!

Step-by-step explanation:

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%

Answer 2

Let CP if 1 book x
Then CP of 24 book = 24x
and CP of 30 book = 30 x

SP of 24 book= 30x

Profit= SP-CP

= 30x - 24x= 6x
P % = 6x/24x× 100
=25%