Step-by-step explanation:
<u>Let's turn each mixed fraction into an improper fraction:</u>


<u>Multiply:</u>

<u>Simplify:</u>

8 is your simplified product.
X = number of days that have passed
448 = 14x
divide both sides by 14
32 = x
Answer:
20 mens are needed to contruct a building in 32 days.