four copies of a book cost Rs 130. 40 rupees find the cost of 12 copies of the same book
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Answer:
The cost of 12 copies of books is Rs 391.2
Step-by-step explanation:
Given as :
The cost of 4 copies of books = Rs 130.40
Let The cost of 12 copies of books = Rs x
Applying unitary method
∵ The cost of 4 copies of books = Rs 130.40
So, The cost of 1 copies of book = Rs
∴ The cost of 12 copies of books = Rs × 12
Or, x = rs 130.40 × 3
i.e x = Rs 391.2
So,The cost of 12 copies of books = x = Rs 391.2
Hence, The cost of 12 copies of books is RS 391.2 Answer
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