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
Ques:- LCM and HCF of two numbers are 48 and 8 respectively. If one of the numbers is 16, the second number is
A. 36
B. 24
C. 18
D. 12