Practice Time and Work Questions for Banks, SSC CGL, RRB NTPC and Sarkari Exams.
Q46. If 4 men can do a job in 12 days, how many days will 6 men take to finish the same job?
Correct Answer:
8 days
Explanation:
Work is inversely proportional to the number of workers.
Total work = 4 × 12 = 48 man-days.
For 6 men, days required = 48 / 6 = 8 days.
Q47. A can complete a work in 10 days, and B can complete the same work in 15 days. How many days will they take to finish the work together?
Correct Answer:
6 days
Explanation:
A's 1-day work = 1/10
B's 1-day work = 1/15
Together, 1 day's work = (1/10 + 1/15) = 1/6
So, they will finish the work in 6 days.