Question

How many envelopes can be made out of a sheet of paper 100 cm by 75 cm, supposing 1 envelope requires 20 cm by 5 cm piece of paper?

• A. 100
• B. 25
• C. 50
• D. 75

Answer 1

The correct option is D

75

Area of the sheet = 100 $\times$ 75 cm${}^2$= 7500 cm${}^2$

Area of envelope = 20 $\times$ 5 cm = 100 cm${}^2$

Number of envelopes that can be made = $\frac{Areaofsheet}{Areaofenvelope}$

=$\frac{7500}{100}$

= 75 envelopes