Question

THE WEIGHT OF 72 BOOKS IS 9KG WHAT IS THE WEIGHT OF 40 SUCH BOOKS

Answer 1

Weight of 72 books = 9 Kg
So, weight of 1 book = 9/72 kg = 0.125 Kg
Hence, weight of 40 books = 0.125*40 kg  = 5 Kg

Answer 2

Answer:

$Weight \: of \: 40 \:books = 5\: kg$

Step-by-step explanation:

Given Weight of 72 books = 9 kg

$Weight \: of \: 1 \: book = \frac{9}{72}\\=\frac{1}{8} \:kg$

$Now,\\Weight \: of \: 40 \: such \:books \\= 40\times \frac{1}{8}\\= 5 \: kg$

Therefore,

$Weight \: of \: 40 \:books = 5\: kg$

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