In what proportion, water should be mixed with milk, to gain 20% profit by selling the mixture at the cost price?
Answer & explanation
Correct answer: option 4
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