Question

The cost of 35 envelopes is rs 105. How many envelopes can be purchased for rs 90.

Answer 1

Cost of 35 envelopes = ₹ 105
Cost of 1 envelope = 105/35 = ₹3
No. of envelopes that can be purchased for Rs90 = 90/3 = 30
Hope it's helpful..!!

Answer 2

Given,cost of 35 envelope is Rs 105. It means that in Rs 105 we can get 35 envelope.

In Rs 105, we can buy 35 envelope

In Rs 1 , we can buy 35 / 105 envelope

In Rs 90 , we can buy 35 / 105 × 90 envelope

In Rs 90, we can buy 30 envelope

Therefore 30 envelopes can be purchased for Rs. 90

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