It takes 6 men 3 days to lay the foundations

Josh Sizemore

Josh Sizemore

Answered question

2021-12-20

It takes 6 men 3 days to lay the foundations for a 30 sqm building. How many men will they need to lay the foundations of a 100sqm building and it needs to be completed in 2 days?

Answer & Explanation

Laura Worden

Laura Worden

Beginner2021-12-21Added 45 answers

MDHW=CONSTANT 
6×330=M×2100 
M=6×3×1002×30=30 
30 men will lay the foundation of a 100 sqm building

Durst37

Durst37

Beginner2021-12-22Added 37 answers

The trick is to calculate total amount of work done first.
Let's assume the amount of work 1 man does in 1 day =x
Total work done by 6 men over 5 days =30x
Number of days it takes for 2 man to complete the work =30x2x
=15
So, answer is 15 days
nick1337

nick1337

Expert2021-12-28Added 777 answers

The house construction requires 6men×5days=30man-days.
So if 2 men are engaged they will take 30man-days2men=15days.
Theoretically and mathematically it will take 15 days. However, if someasks need more than hands, say to lift materials to higher levels or mixing concrete ingredients, carry it and compact it, 2 men will be not be adequate.

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