A man purchased a box full of pencils at the rate of 7 for rs.9 and sold all of them at the rate of 8 for rs.11. In this transaction, he gained rs.10. How many pencils did the box contain ? Select one:
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CP of one pencil = 9/7 = Rs.1.2857
SP of one pencil = 11/8 = 1.3750
Gain from one pencil = 1.3750 - 1.2857 = Rs.0.0893
Total gain = Rs.10
No of pencil he sold = 10/0.0893 = 111.98
112 pencils he should sold
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answer is 112 pencils.....
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