Mathematics
NULL
Medium
Question
A 20 L milk–water mixture is 3 : 2. Twice, 10 L is removed and replaced with pure milk. Find the final milk : water ratio.
A
9 : 1
✓ Official correct answer
B
4 : 7
C
7 : 1
D
2 : 5
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
9 : 1
No member explanations yet for this option.
B
4 : 7
No member explanations yet for this option.
C
7 : 1
No member explanations yet for this option.
D
2 : 5
No member explanations yet for this option.
Explanation
After two replacements the mixture is 18 L milk and 2 L water ⇒ 9 : 1.