Question

Cost of 5 books and 4 note-books is 100. If the
cost of one book be * 12, find the cost of one note-
book.
2​

Answer 1

Step-by-step explanation:

. Therefore,total cost of 5books=₹100-₹48=52.

Answer 2

Given:

• Cost of 5books and 4 notebooks is ₹100
• Cost of 1 book is ₹12

To Find:

• Cost of 1 notebook is ?

Solution:

Here given that, cost of 5 book and 4 notebook is ₹100.

And, cost of 1 book is ₹12.

So from here we can find cost of 5 book ?

Therefore,

• Cost of 5 book is 12 × 5 = ₹60

According to the question,

5 books + 4 notebooks = ₹100 [put 60 on place of 5 books]

→60 + 4 notebooks = 100 [ Take 60 in RHS]

→ 4 notebooks = 100 - 60

→ 4 notebooks = 40

So, here, we can see that cost of 4 notebook is ₹40

Therefore,

Cost of 1 notebook = 40/4

→ 1 notebook = 10

Hence,

• Cost of one note book is ₹10