The weight of 80 identical books is 400 kg. What is the weight of one such book? Options: A . &nbsp10 kg B . &nbsp5 kg C . &nbsp15 kg D . &nbsp20 kg

The weight of 80 identical books is 400 kg. What is the weight of one such book?

Question

The weight of 80 identical books is 400 kg. What is the weight of one such book?

Options:

A . 10 kg

B . 5 kg

C . 15 kg

D . 20 kg

Answer: Option B
:
B
Weight of 80 identical books = 400 kg
Weight of 1 such book

= \frac{400}{80} = \frac{10 \times 40}{10 \times 8} = \frac{40}{8} = 5 k g

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