Question

The weight of 56 notebooks is 7kg. Find:. 1. Weight of 90 such books. 2. How many books weigh 7.5kg?​

Answer 1

Answer:

56 notebook = 7 kg

1 notebook =7/56

90 notebook = 7*90 /56 = 11.25 kg

7 kg = 56

1kg = 56/7 = 8

7.5 kg = 8*7.5 = 60 notebook

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Answer 2

Answer:

Weight of 56notebooks=7kg

1) Weight of 1notebook=7/56=1/8kg=125gm

2) books number in 7.5kg=?

Then,

1book weight=125gm

Required number of book=7.5kg/125gm=7500gm/125gm=60books

Finally,there are 60books in 7.5kg.

Step-by-step explanation: