Question

Cost of 15 envelopes is 75 rupees.How many envelopes can be bought for 145 rupees

Answer 1

15 envelope= 75
1 envelope= 5 rupees
145/5
29 envelope

Answer 2

Cost of 15 envelops is 75 rupees

Cost of 1 envelop is 75/15=5 rupees

Envelopes can be bought in 145 rupees is 145/5=29

Hence 29 envelopes can be bought in 145 rupees