If 3 men or 4 women can plough a field in 43 days, how long will 7 men and 5 women take to a plough it ?
A). 6 days
B). 8 days
C). 10 days
D). 12 days
4 men work 12 hours daily to complete a work in 9 days. If 16 men work 2 hours daily, in how many days will the work be complete?
A). 9 1/2 days
B). 11 1/2 days
C). 13 1/2 days
D). 15 1/2 days
Gopal complete a work in 8 hrs. Jaiprakash complete it in 5 hours. If both work together, they will complete it in how many hours ?
A). 1 1/11 hours
B). 2 1/11 hours
C). 3 1/11 hours
D). 4 1/11 hours
Babu and Asha can do a job together in 7 days, Asha is 1 3/4 times are efficient as Babu. The smae job can be done by Asha alone in
A). 10 days
B). 11 days
C). 12 days
D). 13 days
A train 800 metres long is running at the speed of 78 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in metres) is
A). 400 m
B). 500 m
C). 600 m
D). 700 m