find the ratio between the cost of a pencil to that of a ball pen when the pencils cost ₹16 per score and the ball pen cost ₹15 per dozen.
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Answer:
The price of the pencils per score = ₹96
=> the price of a pencil = ₹96/20
= ₹4.8
the price of the ball pens per dozen = ₹50.4
=> the price of a ball pen = ₹50.4/12
=₹4.2
the required ratio =
price \: of \: the \: pencil \div price \: of \: the \: ball \: pen
=(4.8×10)÷(4.2 ×10)
= 48/10÷ 42/10
=48/10 * 10/42
=8:7
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