Question:
The ratio of milk and water in 60 Litres of adulterated milk is $2:1$. If the ratio of milk and water is to be $1:2$, then the amount of water to be added further is
The ratio of milk and water in 60 Litres of adulterated milk is $2:1$. If the ratio of milk and water is to be $1:2$, then the amount of water to be added further is
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When changing a ratio by adding one component only, fix the unchanged component (here milk $=40$ L) and solve directly from the target ratio.
Updated On: Aug 12, 2025
- 20 Litres
- 30 Litres
- 40 Litres
- 60 Litres
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The Correct Option is D
Solution and Explanation
Step 1 (Current contents): Milk $=\frac{2}{3}\cdot60=40$ L; Water $=20$ L.
Step 2 (Add $x$ L water): Required $40:(20+x)=1:2 \Rightarrow 2\cdot40=20+x \Rightarrow x=60$.
Step 3: Hence add $\boxed{60}$ L water.
Step 2 (Add $x$ L water): Required $40:(20+x)=1:2 \Rightarrow 2\cdot40=20+x \Rightarrow x=60$.
Step 3: Hence add $\boxed{60}$ L water.
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