Mathematics
Medium
Question
Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?
A
12 min
✓ Official correct answer
B
15 min
C
25 min
D
50 min
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
12 min
No member explanations yet for this option.
B
15 min
No member explanations yet for this option.
C
25 min
No member explanations yet for this option.
D
50 min
No member explanations yet for this option.