Question

The cost of a dozen pens is ₹180 and the cost of 8 ball pens is ₹56. Find the ratio of the cost of a pen to the cost of a ball pen.
[3 marks]

Answer 1

Given,
The cost of a dozen pens is ₹180.
and, the cost of 8 ball pens is ₹56.

According to the question,

The cost of one pen $=\frac{₹180}{12}$$=₹15$
[1 mark]

and, the cost of a ball pen is$=\frac{₹56}{8}$$=₹7$
[1 mark]

$\therefore$ The ratio of the cost of a pen to the cost of a ball pen $=\frac{15}{7}$$=15:7$

[1 mark]