Question

8. The cost of 25 pens is Rs.250. find the cost of 30 pens.​

Answer 1

The answer is 300 bcz when you find the cost of one pen we multiply 250 by 25 and get 10
So the cost of one pen is 10
To know the cost of 30 pens we will simply multiply 10 with 30
And get the answer 300

Answer 2

Cost of 25 pens = Rs 250

Cost of 1 pens = Rs 250/25

= Rs 10

Cost of 30 pens = Rs 30×10

=Rs 300

Hope it helps you.