Mathematics
Medium
Question
P is able to do a piece of work in 15 days and Q can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left?
A
8/15
✓ Official correct answer
B
7/15
C
11/15
D
2/11
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
8/15
No member explanations yet for this option.
B
7/15
No member explanations yet for this option.
C
11/15
No member explanations yet for this option.
D
2/11
No member explanations yet for this option.