Question

The cost of 35 envelopes is 105 rs. How many envelops can be brought for rs90

Answer 1

Given that the cost of 35 envelopes is Rs 105.

Cost of 35 envelopes = Rs 105

Cost of ( 35 / 35 ) envelopes = Rs ( 105 / 35 )

Cost of 1 envelope = Rs 105 / 35

Cost of 1 envelope = Rs 3

Cost of ( 1 / 3 ) envelope = Rs ( 3 / 3 )

∴ Cost of 1 / 3 envelope = Rs 1

∴ Cost of 1 / 3 x 90 envelopes = Rs 1 x 90

⇒ Cost of 30 envelopes = Rs 90

Therefore, 30 envelopes can be brought for Rs 90.

Answer 2

35 envelopes-105rs
? -90rs

cross multiply

90 *35/105 =30

hope this helps you