human
Osborn is testing a new way to get dressed in the morning on school days so he goes faster and can get up later. He tracks his time for the week and on Monday is takes him 2 minutes. On Tuesday it takes him 4 minutes. On Wednesday it takes him 3 minutes. On Thursday it takes him 4 minutes. Before Friday arrives he looks at his old way of getting dressed and sees that it was taking him 3 minutes on average to get dressed. How fast does he have to get dressed on Friday so his weekly average ties his old method?
assistant
How many minutes does it take on the school week? ** If it takes on average 3 minutes to get dressed, then it takes 15 minutes total on the school week because 5 x 3 = <<15=15>>15
How many minutes has it taken him so far this week? ** Thus far this week it has taken him 13 minutes to get dressed because 2 + 4 + 3 + 4 = <<13=13>>13
How many minutes does he need on Friday? ** To tie his previous method, he needs to take 2 minutes on Friday because 15 - 13 = <<15-13=2>>2
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