Question

IMAGE ABOVE IS THE QUESTION



PLEASE GIVE WITH PROPER EXPLANATION


TOMORROW'S MY EXAM​

Answer 1

Answer:

D) None of these.

45 more men will be required.

Step-by-step explanation:

number of persons working = 90

number of days required to complete = 40

 Hence the work requirement = 90×40 = 3600 man-day

 90 persons worked for 10 days, hence completed work = 90×10 = 900 man-day

Remaining work = 3600 - 900 = 2700 man-day

if remaining work has to be completed in another 20 days, then required persons = 2700 / 20 = 135.

Hence additional men required = 135 - 90 = 45 more men.