15 men can build a 500m long wall in 30 days. In how many days can 30 men build a 1.2 km long wall?

Related Mcqs:

A and B can do a piece of work in 72 days; B and C can do it in 120 days; A and C can do it in 90 days. In what time can A alone do it ?

A. 80 days B. 100 days C. 120 days D. 150 days...

A can complete a work in 12 days with a working of 8 hours per day. B can complete the same work in 8 days when working 10 hours a day. If A and B work together, working 8 hours a day, the work can be completed in_______days.

A. 5 5⁄11 B. 4 5⁄11 C. 6 4⁄11 D. 6 5⁄11...

A and B can do a piece of work in 21 and 24 days respectively.They start the work together and after some days, A leaves and B completes the rest of the task in 9 days. After how many days did A leave?

A. 5 B. 6 C. 7 D. 8...

Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?

A. 2700 B. 1080 C. 450 D. 1800...

P takes twice as much time as Q or thrice as much time as R to finish a piece of work. They can finish the work in 2 days if work together. How much time will Q take to do the work alone?

A. 7 B. 8 C. 9 D. 6 Let P takes x days to complete the work Then Q takes x/2 days and R takes x/3 days to finish the work Amount of work P does in 1 day = 1/x Amount of work Q does in 1 day = 2/x Amount of work R does in 1 day … P takes twice as much time as Q or thrice as much time as R to finish a piece of work. They can finish...