Question

21. The cost price of 7 books is equal to the selling price of 6 books. Find the profit percent.
​

Answer 1

Answer:

16%

Step-by-step explanation:

Let the cost price of one book = x.

Cost price of 7 books = 7x.

Given, C.P of 7 books = S.P of 6 books.

Selling price of 6 books = 7x.

Then,

Selling price of 1 book = (7x/6) = 1.16x

Now,

We know that,

Profit% = (Selling price - Cost price)/CP * 100

= (1.16 - x)/x * 100

= (0.16x)/x * 100

= 16%

Therefore,

Profit Percentage = 16%

Hope it helps!

Answer 2

Hope this answer helps you

Refer to the attachment