Question

1.
book?
By selling a book for Rs.500, there is gain of 25%. Find the cost price of the book?​

Answer 1

Answer:

The cost price of the book = Rs. 400

Step-by-step explanation:

GIVEN

• Selling price of book = Rs. 500
• Gain percent = 25%

TO FIND

• The cost price of the book.

WE KNOW THE FORMULA

i.e., Cost price = Selling price/(100% + Gain percent)

NOW

→ Cost price of the book = Rs. 500/ (100% + 25%)

→ Cost price of the book = Rs. 500/125%

→ Cost price of the book = Rs. (500 × 100)/125

→ Cost price of the book = Rs. 400

Answer 2

Answer:

Given :-

By selling a book for Rs.500, there is gain of 25%.

To Find :-

CP

Solution :-

As we know that

CP = SP × 100/Discount + 100

CP = 500 × 100/25 + 100

CP = 50,000/25 + 100

CP = 50,000/125

CP = 400