Mathematics
NULL
Medium
Question
150 litres of wine–water has 20% water. How much more water makes water 25% of the new mixture?
A
7 liters
B
15 liters
C
10 liters
✓ Official correct answer
D
9 liters
Community credibility
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A
7 liters
No member explanations yet for this option.
B
15 liters
No member explanations yet for this option.
C
10 liters
No member explanations yet for this option.
D
9 liters
No member explanations yet for this option.
Explanation
Water = 30 L; wine = 120 L. For 25% water: 30+w = (1/4)(150+w) ⇒ w = 10 litres.