Question: Ron ate pizza with his friends the other day. If they ordered a 12-slice pizza and each of them ate 4 slices, how many friends were there with Ron?
Answer with step-by-step thinking: Let the number of friends that ate with Ron be represented by F. That means the total amount of people that ate that day were 1 + F. If each of them ate 4 slices, and the pizza only has 12 slices, that means there could only have been 12 / 4 = 3 people eating. If the total number of people eating was 3, and if was also represented by 1 + F then we have 3 = 1 + F. Solving for F we have 3 - 1 = F. F = 2 friends ate with Ron.
So the answer is 2.


Question: A class composed of 12 girls and 10 boys was sent to the library for their reading class. Their teacher found out that only 5/6 of the girls and 4/5 of the boys are reading. How many students are not reading?
Answer with step-by-step thinking: There are 12 x 5 / 6 = 10 girls who are reading. So, 12 - 10 = 2 girls are not reading. There are 10 x 4 / 5 = 8 boys who are reading. So, 10 - 8 = 2 boys are not reading. Thus, there are a total of 2 girls + 2 boys = 4 students who are not reading.
So the answer is 4.


Question: Mark has a really bad headache. He takes 2 Tylenol tablets of 500 mg each and he does every 4 hours for 12 hours. How many grams of Tylenol does he end up taking?
Answer with step-by-step thinking:
He takes 12 / 4 = 3 doses. Each dose is 500 * 2 = 1000 mg. So he takes 3 * 1000 = 3000 mg. So he takes 3000 / 1000 = 3 grams of Tylenol.
So the answer is 3.