It takes 41 minutes for 9 people to paint 9 walls. How many minutes does it take 14 people to paint 14 walls?

Answer 1

The time (t) is directly proportional to the number of walls (W) and inversely proportional to the number of people (P). To find the proportionality constant (k), we use the initial information

t = kW/p or k = Pt/W = (9)(41)/(9) = 41 So t = 41W/P

Now for the second set of information, W = 14 & P = 14

Then

t = (41)(14)/(14) = 41 minutes