Time & Work Questions and Answers

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Q1
A and B together can complete a piece of work in 35 days while A alone can complete the same work in 60 days. B alone will be able to complete
  • A 42 days
  • B 72 days
  • C 84 days
  • D 96 days
Answer: Option C
Q2
a can do a piece of work in 80days. He works at it for 10 days and then B alone finishes the remaining work in 42 days. the two teogether could complete the work in
  • A 24 days
  • B 25 days
  • C 30 days
  • D 35 days
Answer: Option C
Q3
A and B can together finish a work in 30 days. they worked at it for 20 days and then B left. the remaining work ws done by A alone in 20 more days. A alone can finish the work in :
  • A 48 Days
  • B 50 days
  • C 54 Days
  • D 60 days
Answer: Option D
Q4
A and B can do a peice of work in 45 days and 40 days respectively they began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days after which A left the work was :
  • A 6
  • B 8
  • C 9
  • D 12
Answer: Option C
Q5
A does half as much work as B in three-fourth of the time. If together they take 18 days to complete the work, how much time shall B take to do it.
  • A 30 days
  • B 35 days
  • C 40 days
  • D None of these
Answer: Option A
Q6
A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. B alone can do the whole work in :
  • A 12 days
  • B 15 days
  • C 20 days
  • D 30 days
Answer: Option B
Q7
A and B can do a piece of work in 72 days ; B and C can do it in 120 days ; A anc C do it in 90. In what time can A alone do it ?
  • A 150 days
  • B 120 days
  • C 100 days
  • D 80 days
Answer: Option B
Q8
A and B can do a piece of work in 5 days ; B and C can do it in 7 days A and C can do it in 4 days. Who among these will take the least time. If put to do it alone ?
  • A A
  • B B
  • C C
  • D Data Inadequate
Answer: Option A
Q9
If A, B and C together can finish a piece of work in 4 days; A alone can do it in 12 days and B in 18 days, then C anone can do it in :
  • A 21 days
  • B 16 days
  • C 14 days
  • D 9 days
Answer: Option D
Q10
A and B can do a piece of work in 18 days ; B and C can do it in 24 days; A and C can do it in 36 days. In how many days can they do it all working together
  • A 12
  • B 13
  • C 16
  • D 26
Answer: Option C
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