Question

Andy painted 400 square feet in 3 hours.how long will it take him to paint 720 square feet

Answer 1

It will take Andy 5 hours and 24 minutes to paint 720 sq. ft.

Explanation:

Since he painted 400 sq. ft. in 3 hours, then do 400/3 to get 133.33... sq. ft per hour. Then, do 720 / 133.33... to get 5.40000000001 hours taken. The 5 represents 5 hours, and the .4 represents 24 minutes (because 60 x .4 = 24).

Overall, you get 5 hours and 24 minutes of time to pain 720 sq. ft.

Answer 2

324 minutes or 5.4 hours

Explanation:

400/3 = 133.333

133.333/60 = 2.2222

It took him one minute to paint 2.2222 square feet

720/2.2222 = 324 minutes

324/60 = 5.4 hours