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Question

If 8 pens cost ₹ 84 , how much does 14 pens cost ?


A

₹ 127

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B

₹ 145

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C

₹ 147

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D

₹ 144

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Solution

The correct option is C

₹ 147


Let the cost of 14 pens be x. Then,

Ratio of number of pens = Ratio of their costs

8: 14 = 84 : x

In the proportion , product of extremes = product of means

8×x=14×84

8x = 1176

x=11768

x= ₹ 147


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