Question

# For each notebook, a shopkeeper gets Rs. 4 as profit and for each pen, he loses 20 paise. He made a profit of Rs. 40 and he sold 100 pens during that period. Using your knowledge of integers find out the number of notebooks sold during that period?

A

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B

Yes, 12

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C

Yes, 14

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D

Yes, 15

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Solution

## The correct option is B No, you need more informationLoss on selling 1 pen = 20 paise = - Rs 0.2 So, loss on selling 100 pens = Rs. ((-0.2) X 100) = - Rs. 20 Total gain/loss = Profit earned + Loss incurred So, Profit earned = Total gain/loss - Loss incurred = Rs. 40 - (-Rs. 20) = Rs. 40 + Rs. 20 = Rs. 60 So, notebook sold = Rs. 60 ÷ Rs. 4 = 15 notebooks

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