Question

make sure to right sentences​

Answer 1

Answer:

a) 10 kg

b) 48 books

Step-by-step explanation:

Weight of 72 books= 9kg

Weight of 1 book= 9/72 kg

a) Weight of 80 such books=

$\frac{9}{72} \times 80 = \frac{9}{9} \times 10 = \frac{1}{1} \times 10 = 10$

Weight of 80 such books= 10 kg

b) Let the no. of books weighing 6kg= x

$\frac{9}{72} \times x = 6 \: kg$

$x = 6 \times \frac{72}{9}$

$x = 6 \times 8$

$x = 48$

48 books weigh 60 kg.

Hope It Helps

Answer 2

Answer:

48 books

Explanation:

72 books=9kg

1 book = 9/72 kg =1/8 kg

80 books = 80×1/8=10 kg

1book = 1/8 kg

1kg =8 book

6kg=8×6=48 books