Question

If the cost of 16 books is Rs. 640, what is the cost of 12 books ?

Answer 1

• As per the data given in the question, We have to find the cost price of $12$ books.

       Given data-  Cost price of $16$ books is $640.$

       To find- Cost price of $12$ books.

        According to question,

• The Cost price of $16$ books is $640.$ For calculationg $12$ books costing, we have to find $1$ book cost.

       So, we calculate the price of $1$ book, we will get it,

        $=\frac{640}{16}=40.$

       Then, the cost price of $12$ books. we will get it,

        $=12\times40=480.$

        The cost price of $12$ books are $480.$

       

       

Answer 2

Answer:

Cost of $12$ books is Rs. $480$

Step-by-step explanation:

Given : Cost of $16$ books is Rs. $640$.

To find : Cost of $12$ books.

Solution :

i) It is given in the question that the cost of $16$ books is Rs. $640$.

To find the cost of $12$ books, we have to calculate the cost of $1$ book.

For this,

The cost of one book = $\frac{640}{16}$

                               = $40$ Rs.

ii) Now, for calculating the cost of $12$ books, we have to multiply the cost of one book with number of books.

∴ $12$ ×$40$ = $480$ Rs.

iii) ∴ Cost of $12$ books is Rs. $480$.