Question

The weight of 72 books is 9 kg.
a) Find the weight of 80 such books.
b) How many books will werght 6 kg​

Answer 1

a). since wieght of 72 books is 9 kg.

therfore weight of 1 books is 9/72.

therefor weight of 80 books is 9/72 x 80= 10

Answer is 10

b).since 9 kg is wieght of 72 books.

therefor 1 kg is weight of 72/9.

therefor 6 kg is weight of 72/9 x 6= 48

your Answer is 48

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Answer 2

Answer:

(a) 10 kg (b) 48 books

Step-by-step explanation:

(a)The weight of 72 books is = 9 kg.

The weight of 1 book will = 9/72kg = 1/8 kg

The weight of 80;books will = 1/8×80 kg = 10kg

(b)9 kg is the weight of = 72 books

1 kg is the weight of = 72/9 = 8 books

6 kg is the weight of = 8×6 = 48 books