Question

The cost of 1 dozen gel pens is 144 rupees and the cost of 9 ball pens is 81 rupees. Find the ratio of the cost of a gel pen to the cost of a ball pen.​

Answer 1

Answer:  One gel pen = 12 rs

               One ball pen = 9 rs

   Ratio = 12:9

             =4:3

ANSWER =  4:3