Question

the weight of 28 notebook s is 1.120 kg.find the weight of 40 such notebook?
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Answer 1

Given ,

The weight of 28 notebooks = 1.120 kg

The weight of 40 such notebooks = ? kg

28 books=1.120kg

40 books = ? kg

[cross multiply]

$= \: \frac{40 \times 1.120}{28}$

$= \: \frac{44.8}{28}$

$= \: 1.6kg \:$

$\underline{Therefore \: weight \: of \: 40 \: such \: note \: books \: = \: 1.6kg \: }$

Answer 2

Answer:

ans=28/1.120*40

=1.6kg