Question

3 people can pave a driveway in 4 hours.How long will it take for 8 people to pave a driveway?

Answer 1

In order to determine how log will take for 8 people to pave a driveway you use the given proportion: 3 people pave a driveway in 4 hours.

By a simple rule of three you have:

3/4 = 8/x

Where you have peeple in the numerator and time in hours in the denominator.

You solve the previous equation for x:

3/4 = 8/x

x = (8/3)*(4) = 32/3 = 10.66

Then, 8 people will take approximately 10 hours plus 40 minutes to pave a driveway