Question

A group of men can complete a job in K hours. After every 4 hours, half the number of men working at that point of time leave the job. Continuing this way if the job is finished in 16 hours, what is the value of K ?
A) 7 hrs
B) 7.5 hrs
C) 8 hrs
D) 8.25 hrs

Answer 1

.✒✒A group of men can complete a job in K hours. After every 4 hours, half the number of men working at that point of time leave the job. Continuing this way if the job is finished in 16 hours, what is the value of K ?
A) 7 hrs
B) 7.5 hrs
C) 8 hrs✔✔✔✔
D) 8.25 hrs