An 84-litre mixture has milk and water in the ratio 5:2. If 21 litres of the mixture is removed and 12 litres of pure milk is added, what is the new ratio of milk to water?

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Accepted Answer

1. Find initial amounts: milk = $\frac{5}{7}	imes84=60$ L, water = $\frac{2}{7}	imes84=24$ L.
2. Remove 21 L: milk removed = $\frac{5}{7}	imes21=15$ L, water removed = $6$ L.
3. Left in jar: milk = $60-15=45$ L, water = $24-6=18$ L.
4. Add 12 L milk: milk = $45+12=57$ L, water = $18$ L. Ratio $57:18=19:6$.
5. So the new ratio is 19:6.
FINAL_ANSWER: c

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