4. An automobile dealership received 11 cars that needed to be detailed. If the

service staff took 2 1/2

hours to detail the automobiles, how long did each car

take?

11 cars = 21/2 hours

Convert 21/2 hours to minutes

60minutes = 1hour

2.5 hours = 150mins

11cars=150 mins

1 car = 1/11*150mins=

150/11=13 7/11mins

7/11to seconds = 60 seconds = 1minutes

7/11*60secs = 38secs

Answer = 1car = 13mins 38 secs