Question

The cost of 8 books is rupees 72 find the cost of 20 such books(Plz give the answer fast ok)....
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Answer 1

Cost of 8 book is ₹72

So, cost of 1 book is ₹ 72/8 = ₹9

so cost of 20 books is ₹ 9 × 20 = ₹180

Answer 2

Hey here is your answer

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Cost of 8 books is 72 rupees

then,

Cost of 1 book is 72/8 rupees

:. Cost of 45 book is

= 45 × 72/8 rupees

= 45 × 9 rupees

= 405 rupees

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