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In what proportion, water should be mixed with milk, to gain 20% profit by selling the mixture at the cost price? |
1 : 6 5 : 6 2 : 3 1 : 5 |
1 : 5 |
When mixture is sold at cost price, then the percentage of profit shown the Qty of contents. i.e 20% = \(\frac{1}{5}\) = \(\frac{1 (water)}{5 (milk)}\) Therefore, Ratio → W : M = 1 : 5 |
