Question

In a book store 60 identical books occupy 1.5m of shelf length. a) How much shelf length is required for 200 books? b) If a shelf is 80cm long, how many books are needed to fill the the shelf?

Answer 1

a) 60 books occupy 1.5m of shelf
∴, 1 book occupies (1.5/60) m of shelf
∴, 200 books occupy {(1.5/60)×200} m of shelf
=(1.5/6)×20
=30/6
=5m of shelf Ans.
b) now, 5m=500cm is occupied by 200 books
∴, 1cm is occupied by (200/500) books
∴, 80cm is occupied by (200/500)×80 books
=(2/5)×80
=2×16
=32 books Ans.

Answer 2

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Step-by-step explanation:

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