A contractor has the target of completing a work in 40 days .he employed 20 person who completed 1/4 of the work in 10 days and left . the number of persons he has to employs finish the remaining part as per target it
Answers
Answer:
20 persons has to be employed by the contractor to finish the remaining part of the work as per target.
Step-by-step explanation:
Total work to be done in 40 days.
Work done in 1 day = (1 / 40)
Work done by 20 persons in 10 days = (10/40= (1/4)
Work done by 1 person in 1 day = (1/4) * (1/20) * (1/10) = (1/800)
As given to us in the question, 20 persons have completed (1/4)th of the work in 10 days.
∴ Remaining days to complete the work = 40 – 10 = 30 days.
∴ Remaining work to be done = (1 – ¼)th = (3/4)th
Let the no. of persons required to complete the work in 30 days be “n”.
∴ Remaining work to be done = (no. of persons required) * (no. of days remaining) * (work done by 1 person in 1 day)
∴ ¾ = n * 30 *(1/800)
Or, n = (800 * 3) / (4 * 30)
Or, n = 20
∴ The no. of persons required to complete the work in 30 days is 20.
Answer:
Step-by-step explanation:
(20×10)/1 =(30×D)/3
D=20 days