Question

weight of 72 books is 9 kg what is the weight of 80 such books

Answer 1

$your \: answer$

Weight Of 72 Books = 9 Kg

So Weight Of 1 Books =

$\frac{9}{72} = \frac{1}{8}$

Weight Of 80 Books =

$\frac{1}{8} \times 80 = \frac{80}{8} = 10$

$hence \: if \: 72 \: books \: weighs \: 9\: kg$

$then \: 80 \: books \: costs \: 10 \: kg$

$hope \: it \: helps$

Answer 2

72 books = 9 kg

Find the weight of 1 book:

72 books = 9 kg

1 book = 9 ÷ 72 = 0.125 kg

Find the weight of 80 books:

1 book = 0.125 kg

80 books = 0.125 x 80 = 10 kg

Answer: 80 books weighs 10 kg