Kiran buys 110 pens. He sells some of the pens at a profit of 40% and remaining at a loss of 15%. If the overall profit is 10%, then what is the number of pens sold at profit?
A
40
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B
60
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C
50
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D
70
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Solution
The correct option is C 50 This question can be solved using allegation cross.
So, the ratio of pens sold for profit to loss = 5:6
Number of pens sold for profit=511×110=50