P can do a work in the same time in which q and r together can do it. if p and q work together, the work can be completed in 10 days. r alone needs 50 days to complete the same work. then q alone can do it in?
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Answered by
4
r=1/50
p=q+r
p-q=r
p-q=1/50
p+q=1/10
2p=6/50
p=3/50
q=3/50-1/50=2/50=1/25
q alone can do the work in 25 days.
p=q+r
p-q=r
p-q=1/50
p+q=1/10
2p=6/50
p=3/50
q=3/50-1/50=2/50=1/25
q alone can do the work in 25 days.
Answered by
1
Answer:
- 12 hours
Step-by-step explanation:
Work done by A in 1 hour = 1/4
Work done by B and C in 1 hour = 1/3
Work done by A and C in 1 hour = 1/2
Work done by A,B and C in 1 hour = 1/4+1/3 = 7/12
Work done by B in 1 hour = 7/12 – 1/2 = 1/12 ,,
Hence, B alone can complete the work in 12 hours
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