Question

The cost of a dozen gel pens is ₹180 and the cost of 8 ball pens is ₹56. Find the ratio of the cost of a gel pen to the cost of a ball pen.

• A. 4 : 5
• B. 15 : 7
• C. 7 : 15
• D. 5 : 4

Answer 1

The correct option is B 15 : 7

Cost of 12 gel pens = ₹ 180

Cost of 1 gel pen = ₹$\frac{180}{12}$

= ₹15

Cost of 8 ball pens = ₹56

Cost of 1 ball pen = ₹$\frac{56}{8}$

= ₹7

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