In Dopolopolis, the first $20,000 dollars of a person's income is taxed at 6%, and any additional income they make is taxed at 10%. If Donny of Dopolopolis paid $2,000 in income tax this year, how much did Donny make?

On a 30 question test, Mike answered 60% of the first 20 questions correctly. What percent of the remaining 10 questions does he need to answer correctly for his grade on the entire test to be 70%?

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Forty percent of the 20 professors in a university's physics department are male. If two male professors and two female professors retire, what percentage of the department will be male after the change?

A college student takes out a loan of $8,000 per Quarter. A college student's average living cost is represented by the chart below.

.

What percentage of the student's loan goes toward housing and tutiton?

A baker is able to sell doughnut holes made from his doughnuts in groups of 6 for $0.50. If he wastes one hole per dozen doughnuts, how much money does he fail to make when selling the holes that can be packaged from 22 dozen doughnuts?

A group of five students averaged 85 points on an exam taken out of 100 total points. If the addition of two additional students raises the group average to 88 points, what is the minimum score that one of those two students can receive? Assume that 100 is the highest score for the exam.

of a alcohol solution is mixed with of a alcohol solution. What percentage of the new mixture is alcohol?

A pair of shoes originally cost $40. It is on sale and now only costs $32. The sale was for what percentage off the original cost?

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Quantity A:

Quantity B: