Question

the weigh of 72 books is 9 kg. so what will the weight odlf 40 books​

Answer 1

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$\longrightarrow \sf Weight \: of \: 72 \: books = 9 \: kg \\ \\\longrightarrow \sf Weight \: of \: 1\: book = \frac{9}{72} \: kg \\ \\\longrightarrow \sf Weight \: of \: 40 \: books = \frac{9}{72} \times 40 \\ \\\longrightarrow \sf \frac{1}{8} \times 40 \\ \\\longrightarrow \sf 5 \: kg$

Answer 2

Answer:

IT'S 5 KG BRO

Step-by-step explanation:

LET THE WEIGHT OF 40 BOOKS BE x.

72\9 × 40×x

72x = 40×9

72x = 360

x = 360÷72

x = 5

THEREFORE THE ANSWER OF YOUR QUESTION IS 5KG...

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