Time and Work For SBI PO Set – 03

Time and Work For SBI PO Set – 03

1)  A supplies 20 men who work for 8 h per day for 6 days. B supplies 15 men working at 9 h per days for 7 days and C supplies 10 men working 6 h per day for 8 days to do certain job. If Rs.636 is paid for all the labour, then what is C’s share?

a) Rs. 128

b) Rs. 136

c) Rs. 148

d)  Rs. 154

e) Rs. 136

2) Two taps A and B can separately fill a cistern in 45 and 40 minutes respectively. They started to fill a cistern together but tap A is turned off after few minutes and tap B fills the rest part of cistern in 23 minutes. After how many minutes, was tap A turned-off?

a)  9

b) 10

c) 12

d) 7

e) None of these

3) On a river, B is between A and C and is also equidistant from A and C. A boat goes from A to B and Back in 5 hours 15 minutes and from A to C and back in 7 hours. How long will it take to go from C to A if the river flows from A to C?

a) 1 ½  hours

b) 2 ½  hours

c) 3 ½  hours

d) 4 ½  hours

e)  None of these 

4) 20 workers working 5h per day complete a work in 10 days. If 25 workers are employed to work 10h per day, what is the time required to complete the work?

a)  4 days

b)  5 days

c)  6 days

d)  8 days

e) None of these 

5) If 5 boys take 7 h to pack 35 toys, how many boys can pack 65 toys in 3 h?

a)  26

b)  39

c)   45

d)  65

e)  None of these 

6) A can do a piece of work in 10 days and B in 20 days. They begin together but A leaves 2 days before the completion of the work. The whole work will be done in?

a)  8 days

b)   7 2/3 days

c)  7 days

d)  6 days

e)  None of these 

7) A and B can do a piece of work in 9 days and 12 days respectively. If they worked in alternate days starting from for ‘A’ How many days, the work will be completed?

a)  10

b)   15

c)  10 1/4

d)   5

e) None of these 

8) Sunil and sandy together can finish a work in 30 days. They worked it for 20 days and then sandy left. The remaining work was done by Sunil alone in 20 more days, then Sandy alone can finish the work in

a)  58 days

b)  30 days

c)  48 days

d)  60  days

e) None of these 

9)  Pipe A can fill a tank in 5 hours, pipe B in 10 hours and pipe C in 30 hours. If all the pipes are open, in how many hours will the tank be filled? 

a)  3

b)   4

c)  5

d)  6

e) None of these 

10) A cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both the taps are opened simultaneously then after how much time will the cistern get filled ?

a)  7 \(\frac {1}{5}\)

b)    8 \(\frac {1}{5}\)

c)   9 \(\frac {1}{5}\)

d)   10 \(\frac {1}{5}\)

e) None of these