Mathematics
Medium
Question
A can do a certain work-in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in_________?
A
15 days
B
20 days
C
25 days
✓ Official correct answer
D
30 days
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 days
No member explanations yet for this option.
B
20 days
No member explanations yet for this option.
C
25 days
No member explanations yet for this option.
D
30 days
No member explanations yet for this option.