Aptitude Questions On Time And Work

Here we share aptitude question on time and work . It is a important topic in competitive exam. It is also help to crack your job selection interview. so, all candidates read this all question. This topic question asking many exam like SSC, Bank PO etc.

Ques 1. A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?
a) 11 days
b) 13days
c) 20 3/7 days
d) None of these

Ques 2. 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) 40 days
c) 15 days
d) None of these

Ques 3. A is 50% as efficient as B.C does half of the work done by A and B together. If C alone does the work in 40 days, then A ,B and C together can do the work in?
a) 13 1/3 days
b) 20 days
c) 15 days
d) 30 days

Ques 4. A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?
a) 8
b) 5
c) 6
d) 5 1/2

Ques 5. A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in?
a) 10 days
b) 15 days
c) 12 days
d) 8 days

Ques 6. A machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 a.m. While machine P is closed at 11 am and the remaining two machines complete the work. Approximately at what time will the work be finished?
a) 11:30 am
b) 12:30 pm
c) 12 noon
d) 1 pm

Ques 7. A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. They all work together for 10 days when B and C leave. How many days more will A take to finish the work?
a) 18 days
b) 36 days
c) 24 days
d) 30 days

Ques 8. A and B can together finish work in 30 days .They worked together for 20 days and then B left. After another 20 days, A finished the remaining work .In how many days A alone can finish the job?
a) 40
b) 50
c) 54
d) 60

Ques 9. X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work?
a) 13 1/3 days
b) 16 days
c) 25days
d) 50 days

Ques 10. A does 4/5 of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days .How long B alone would take to do the whole work?
a) 23 days
b) 37 days
c) 37 ½ days
d) 40 days