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
• B. 150
• C. 200
• D. 250

Answer 1

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 $c{m}^2$

Given,
Length of the envelope = 15 cm
Breadth of the envelope = 10 cm
So, area of one envelope = 15 × 10
= 150 $c{m}^2$

Number of envelopes that can be made

= $\frac{Areaofthesheet}{Areaof1envelope}$

= $\frac{30000}{150}$

= 200 envelopes