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A woman suffered 20% loss on first investment and made 10% profit at second investment and 12 ½% profit on the third investment. If the invested amount be in the ratio of 4 : 5 : 3, find her profit percentage?

Correct Answer: 0.625%

Explanation:

From the given data,


let the amounts invested be 4p, 5p and 3p


Net profit = Total profit - Total loss


= 10x5p/100 + 25x3p/200 - 20x4p/100


= 0.875p - 0.8p


= 0.075p


Therefore, profit% = (Net profit/Total investment) x 100


= 0.075 x 100/12 


= 0.0625%


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