[Question]: 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?
[Answer]: 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. Thus far this week it has taken him 13 minutes to get dressed because 2 + 4 + 3 + 4 = 13. To tie his previous method, he needs to take 2 minutes on Friday because 15 - 13 = 2.
So the answer is 2.

[Question]: As a freelancer, Katherine takes 20 hours to develop a website for her clients. Her junior, Naomi, takes 1/4 times more time to complete creating a similar website. If many clients required her to build their websites in a particular year, and she gave her junior 30 websites to develop, calculate the total number of hours Katherine's junior took to create the 30 websites.
[Answer]: Katherine's junior takes 1 / 4 * 20 = 5 more hours to build a similar website as Katherine. The total number of hours Katherine's junior takes to build a website is 20 + 5 = 25 hours. If Katherine gave her junior 30 websites to build, her junior spent 30 * 25 = 750 hours on building the 30 websites.
So the answer is 750.

[Question]: Mark orders 100 chicken nuggets. A 20 box of chicken nuggets cost $4. How much did he pay for the chicken nuggets?
[Answer]:
He orders 100 / 20 = 5 boxes. So that means he spent 5 * 4 = $20 on nuggets.
So the answer is 20.