If Cost of 20 envelopes is ₹ 50 then how many envelopes can be purchased for ₹ 10?
4
Given for ₹ 50 number of envelopes can be purchased = 20
Number of envelopes can be purchased for ₹ 1 = 2050
= 25
Now, number of envelopes can be purchased for ₹ 10 = 25 × 10
= 4