Question

the cost of 4 books and 2 notebook is ₹22.50 if a books and 2 notebooks is ₹9 , find the cost of a book? ​

Answer 1

Answer:

Let the cost of each notebook be n, and the cost of each pen be p.

Then we are given that 6n = 8p …. (1)

And n = p + 12 …. (2)

Substituting (2) in (1), we have

6(p + 12) = 8p

So 6p + 72 = 8p or 2p = 72

Therefore, p = 36

And from (2), n = 36 + 12 = 48

So, the notebooks cost Rs 48 and the pens cost Rs 36