Q: 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?
A: 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. The answer is 2.

Q: Shane prepares sandwiches for the Boy Scouts. He buys 2 packages of sliced bread containing 20 slices each, and he also buys 2 packages of sliced ham containing 8 slices each. Shane will make as many sandwiches as he can according to the ham he has. How many slices of bread will he have leftover?
A: With 2 packages of sliced ham, Shane has 2 * 8 = 16 slices of ham. Since he has 16 slices, Shane makes 16 sandwiches. With 2 packages of sliced bread, he has 20 * 2 = 40 slices of bread. To make the 16 sandwiches, he needs 16 * 2 = 32 slices of bread. He has 40 - 32 = 8 slices of bread leftover. The answer is 8.

Q: There are 7 mL of solution in each of 6 test tubes. Dr. Igor takes all of the solution and then evenly distributes it into 3 beakers. How many mL of solution are in each beaker?
A:
7 * 6 = 42 mL. 42 / 3 = 14 mL. Each beaker holds 14 mL of solution. The answer is 14.