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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
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B
15 : 7
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C
7 : 15
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D
5 : 4
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Solution

The correct option is B 15 : 7

Cost of 12 gel pens = ₹ 180

Cost of 1 gel pen = ₹18012

= ₹15

Cost of 8 ball pens = ₹56

Cost of 1 ball pen = ₹568

= ₹7

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


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