Question

if the cost of 12 pens is rs.204 ,then the cost of 15 pens is?​

Answer 1

Step-by-step explanation:

Cost of 12 pen is 84

Cost of one pen

84/12

7

Now to calculate cost of 10 pens we have to multiple by 7

10×7

70

Answer 2

Answer:

rs.255

Step-by-step explanation:

cost of 12 pens= rs. 204

cost of 1 pen= 204/12

cost of 15 pens= 204/12× 15 =51×5=255

therefore the cost of 15 pens is rs.255.