Cost of a dozen pens is Rs 180 and cost of 8 ball pens is Rs 56. Find the ratio of the cost of a pen to the cost of a ball pen.

Explanation

Cost of a dozen pens in rupees `= 180`

Cost of a pen in rupees ` = 180/12 = 15`

Cost of a 8 ball pens in rupees `= 56`

Cost of a ball pen in rupees ` = 56/8 = 7`

So, ratio of cost of a pen to the cost of a ball pen `= 15/7`