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Ques:- A train takes 9 sec to cross a pole. If the speed of the train is 48 kmph, then length of the train is
A. 80 m
B. 90 m
C. 120 m
D. 150 m
Ques:- Thirty men take 20 days to complete a job working 9 hours a day. How many hour a day should 40 men work to complete the job?
A. 8 hrs
B. 7 1/2 hrs
C. 7 hrs
D. 9 hrs