One crew can seal a parking lot in 12 hours and another in 15 hours. how long will it take to seal the parking lot if the two crews work together?

Question

Mathematics

Aaron Freeman

10 March, 20:52

One crew can seal a parking lot in 12 hours and another in 15 hours. how long will it take to seal the parking lot if the two crews work together?

+4

Answers (1)

Know the Answer?

Jacoby Nicholson · Answer 1

This is a typical work problem in algebra. The approach to this is using the equation: Rt = 1, where R is the rate per person working, t is the amount of time worked by an individual. All their rates must equal to 1. The solution is as follows:

12/x + 15/x = 1

Solving for x,

x = 27 hours

So, if they work together, they can finish the work in 27 hours.