The price of a box and a pen is Rs.60. The box was sold at a 40% profit and the pen at a loss of 10%. If the Shop keeper gains Rs.4 in the whole transaction, then how much is the cost price of Box?

Rs. 10

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Rs. 30

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Rs. 20

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Rs. 40

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None of the Above

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Solution

The correct option is C Rs. 20
Let the cost of the box be x, so the cost of pen will be (60-x)
$(1.4 x + 0.9 (60 - x)) = 64 \Rightarrow x = 20$

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The price of a box and a pen is Rs.60. The box was sold at a 40% profit and the pen at a loss of 10%. If the Shop keeper gains Rs.4 in the whole transaction, then how much is the cost price of Box?

The correct option is C Rs. 20Let the cost of the box be x, so the cost of pen will be (60-x) (1.4x+0.9(60−x))=64⇒x=20

The correct option is C Rs. 20
Let the cost of the box be x, so the cost of pen will be (60-x)
$(1.4 x + 0.9 (60 - x)) = 64 \Rightarrow x = 20$