Question

how many envelopes of Size 15 CM by 5 cm and be made out of a sheet of a paper 115 CM by 75 cm ​

Answer 1

115 evelopes of size (15 by 5) cm can be made out of a sheet of paper of size (115 by 75) cm

i) Let the required number of envelopes be n

ii) Then

n× area of one envelope = area of the

sheet

n × (15×5) = 115×75

iii) Therefore, n = 115

Thus 115 envelopes can be made.