Question

5. The cost of 15 envelopes is 37.50. How many envelopes can be bought for 300? What will be the cost
of 20 envelopes?​

Answer 1

Step-by-step explanation:

Cost of 15 envelopes=37.50Rs

Cost of 1 envelope=37.50/15=2.5Rs

Cost of 20 envelopes=2.5*20=50Rs

37.50Rs=20 envelopes

1Re=20/37.50

300Rs=20*300/37.50=160

Answer 2

cost of 15 envelop = 37.50

cost of 1 envelop = 37.50/15 = 2.5

so the cost of 20 envelop = 2.5*20

= 50

envelop brought for rs 300 = 300/2.5

=120