Question

cost of a dozen pens is 180 rupees and cost of 8 ball pens is 56 rupees find the ratio of the cost of a pen to the cost of a ball pen​

Answer 1

Answer:

ratio of the cost of a pen to the cost of a ball pen = 15:7

Step-by-step explanation:

cost of 12 pens = 180 Rs

cost of 1 pen = 15 Rs

now

cost of 8 "ball" pens = 56Rs

cost of 1 ball pen = 7 rs

so

ratio of the cost of a pen to the cost of a ball pen = 15:7

Answer 2

Cost of a dozen pens (12 pens)
= Rs.180
Cost of 1 pen = 180/12 = Rs. 15

Cost of 8 ball pens
= Rs. 56
Cost of 1 ball pen = 56/8 = Rs. 7

Ratio of cost of a pen to the cost of a ball pen =
cost of pen/ cost of ball pen
= 15/7

Required ratio = 15:7