Question

Cost of 60 envelopes is 90. What will the cost of 10 envelopes

Answer 1

rupees 15 is the answer

Answer 2

if cost of 60 envelopes is 90, so divide 90 by 60 to find the cost of 1 envelope.

90/60= 3/2 (cost of 1 envelope)

now multiply the cost 1 envelope by 10:

3/2 x 10 =15

The cost of 10 envelopes is 15.