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Question

Question 97

A lady buys some pencils for Rs.3 and equal number for Rs. 6. She sells them for Rs. 7. Find her gain of loss %

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Solution

Let the Lady buys x number of pencils for Rs. 3.
Cost price for one pencil, CP1 = Rs. 3x

Also, she buys same number of pencils for Rs. 6
Cost price for one pencil, CP2 = Rs 6x

Now, total pencils = x + x = 2x.
She sells, 2x pencils = Rs. 7

Selling price of 1 pencil = Rs. 72x
Case I We know that, Gain = SP - CP
Gain = Rs. (72x3x)=Rs.(762x)=Rs.12xGain%=GainCP×100=12x3x×100=1002×3=50%3
Case II

Also, we know that,
Loss = CP - SP
Loss = 6x72x=6×272x=Rs.52x Loss%=LossCP×100=52x6x×100=2506=1253%Net Loss%=1253503=753=25%


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