Mathematics
Medium
Question
A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
A
15 min
B
20 min
C
27.5 min
D
30 min
✓ Official correct answer
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
15 min
No member explanations yet for this option.
B
20 min
No member explanations yet for this option.
C
27.5 min
No member explanations yet for this option.
D
30 min
No member explanations yet for this option.