Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | E Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Stuck
Date Posted: 5 years ago
Views: 243
Total number of man-hours worked by the 20 men in 54 days = 20 x 8 x 54
= 8640
So it takes 8640 man-hours to construct the house.
For 18 men working 7.5 hours a day,
Number of man-hours worked in 1 day
= 18 x 7.5
= 135 hours
Number of days taken to build the house
= 8640 ÷ 135
= 64
So 64 - 54 = 10
So it takes 10 more days
= 8640
So it takes 8640 man-hours to construct the house.
For 18 men working 7.5 hours a day,
Number of man-hours worked in 1 day
= 18 x 7.5
= 135 hours
Number of days taken to build the house
= 8640 ÷ 135
= 64
So 64 - 54 = 10
So it takes 10 more days
Omg thankyou
Welcome
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Assuming rates the same
Date Posted:
5 years ago
360 Tutoring Program