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Q10. A petrol pump owner mixed leaded and unleaded petrol in such a way such that the mixture contains 10% unleaded petrol. What quantity of leaded petrol should be added to 1 litre mixture, so that the percentage of unleaded petrol becomes 5%?Allegation and mixture method prefer |
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Answer» Answer: 1000/5×10 1000×2 2000 |
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