Question

The number of envelopes that can be made out of a rectangular piece of paper of sides 75 dm and 3 m, if each envelope requires 90 cm² of paper is

Answer 1

75

Area of the sheet = 100 × 75 cm2= 7500 cm2

Area of envelope = 20 × 5 cm = 100 cm2 

Number of envelopes that can be made= Area of sheet/Area of envelope = 7500/100 = 75 envelopes