Question

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.

Answer 1

here is your answer


1) cost of a dozen pens = 180

i.e. cost of 12 pens = 180

than, cost of 1 pen = 180/12 = rs15

2) cost of 8 ball pens = 56

than, cost of 1 pen = 56/8 = rs7

now, ratio of cost of a pen : cost of a ball pen

= 15 : 7

so, your answeris 15 : 7

Answer 2

Given...

cost of a dozen pens = ₹ 180

we know that dozen= 12..

cost of each pen = Total Cost/no.of pens

so cost of each pen = ₹180/12= ₹15


Given

Cost of 8ball point pens = ₹56

cost of each ball point pen = Total Cost/no.of pens

cost of each ball point pen

= ₹56/8

= ₹7


Then

The ratio of the cost of a pen to the cost of a ball pen.


15 : 7