Question

if the cost of 60 envelope is Rs. 90 ...How many envelopes can be purchased for Rs. 30?​

Answer 1

Answer:

20 envelopes

Step-by-step explanation:

60 envelopes cost Rs. 90

So the ratio is

60:90

If we divide 90 by 3, we get 30. So our new ratio will have 30 as the second number:

:30

Keep in mind that the two ratios have to be equivalent, so if we divided 90 by 3, we must also divide 60 by three.

60/3 = 20

So our new ratio is:

20:30

That means that for Rs. 30 you can buy 20 envelopes

Answer 2

Answer:

20 envelopes

Step-by-step explanation:

Given,

cost of 60 envelopes = Rs. 90

cost of 30 envelopes = 60*30/90

= 1800/90

= 20

Hence,the answer is 20 envelopes.

Hope it helps you.