Can you solve these easy math simple questions

1) A shirt is originally $30 and after the sale is $25. What percent off was the shirt?
2) Steve spent $40 on groceries this week. Of the $40, $12 of it was spent on soda. What percent of his money was spent on soda?
3) 12.5% of 300 is what number?
4) Monisha borrowed $20,000 for 3 years and paid a total of $2000 in interest. What was the interest rate?
5) Your class earned $110 Saturday afternoon by washing cars to raise money for a class trip. This is 15% of the money needed for the trip. What is the total amount needed?
6) In how many ways can a club of 4 members (Abigal, Ben, Chris, and Dan), choose a two member sub-committee? Make a list.

1. 25/30 = 0.83333
The percentage reduced was 1 - 0.83333 = 0.166667 * 100% = 16.67% reduction.

2. 12/40 = 0.3 = 30%

3.0.125 * 300 = 37.5

4. Ambiguous question. I assume you are asking for the annual interest rate, however.
2000/3 = $666.67 per year in interest
666.67/20000 = 0.03333 = 3.33% annual interest rate

5. (0.15 / 110) = (1 / x)
Cross-multiplying and solving for x gives a total amount of $733.33 needed

6. Abigail-Ben
Abigail - Chris
Abigail-Dan
Ben-Chris
Ben-Dan
Chris-Dan

6 ways

Can I? Yes.

Will I? No..