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Question

How many envelopes can be made out of a sheet of paper 200 cm by 150 cm, supposing 1 envelope requires 15 cm by 10 cm piece of paper?

A
100
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B
150
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C
200
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D
250
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Solution

The correct option is B 150

Given,
Length of the sheet = 200 cm
Breadth of the sheet = 150 cm
We know that area of a rectangle
= length x breadth
So, area of the sheet = 200 × 150
= 30000 cm2

Given,
Length of the envelope = 15 cm
Breadth of the envelope = 10 cm
So, area of one envelope = 15 × 10
= 150 cm2

Number of envelopes that can be made

= Area of the sheetArea of 1 envelope

= 30000150

= 200 envelopes


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