If the weight of 12 sheets of paper is 40 grams, then how many sheets of paper will be present in a paper bundle of 5 kg?

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Solution

Let x be the number of sheets in the paper bundle of 5 kg.

Weight (in g) Sheets of paper

40 12

5000 x

Sheets of paper and it's weight are in direct variation.
So, using arrow method:
$\frac{5000}{40} = \frac{x}{12}$
On cross multiplication,
$x = \frac{5000}{40} \times 12 = 1500$
So, the number of sheets in the paper bundle is 1500.

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