Lorenzo is a painter. he recently painted a garage floor that was 10.5 ft by 12.8 ft.
It took him 2 1/4 hours to complete the job, ie. 2.25 hours
Total area 10.5 x 12.8 =134.4 sq ft
he charged his customer $66.25 for the job.
He get $66.25 /134.4 = $0.49 per sq ft
It takes 2.25 hrs to complete the job, in 1 hour he can paint 134.4 sq ft/2.25 =59.7 sq ft
A. write a unit rate to describe what area of a surface Lorenzo can paint each hour.
he paint 134.4 sq ft in 2.25 hrs he get $66.5
he paint 59.5 sq ft in 1 hrs he get $29.5
B how long will it take him to paint the basement walls?
two walls are 9 ft by 10.2 ft,and two walls are 9 ft by 6.7 ft.
Total area = 2(9 x 10.2) + 2(6 x 6.7) = 304.2 sq ft
Total time taken is 304.2 /59.5 =5.1 hours
His next job is painting the four walls of a basement with the following dimensions:
explain your thinking.
C. what will he charge for the time it takes to paint the basement?
basement area =10.2 x 6.7 = 68.34
time taken to do this =68.34/59.5 = 1.2 hours
Total charge to paint the basement = 1.2 x 29.5 =$35.4
