[Question]: Ivan has a piggy bank that can hold 100 pennies and 50 dimes. How much, in dollars, does Ivan have if he has filled his two piggy banks with those coins?
[Answer]: Ivan has 50 x 10 = 500 cents from the 50 dimes in his one piggy bank. So, he has a total of 100 + 500 = 600 cents in one of his piggy banks. Since 100 cents is equal to 1 dollar, then Ivan has 600 / 100 = 6 dollars from one of his piggy banks. Therefore, Ivan has a total of $6 x 2 piggy banks = $12 from his two piggy banks.
So the answer is 12.

[Question]: Nathan went to the arcade. He played the air hockey game 2 times and the basketball game 4 times. If each game cost 3 tokens, how many tokens did he use?
[Answer]: Nathan played a total of 2 air hockey + 4 basketball = 6 games. This cost him 6 games x 3 tokens each = 18 tokens.
So the answer is 18.

[Question]: On Sunday Trey is going to do some chores at home. First, he wants to make a To Do list and count up how many things he has to do that day and how long it should take. He has several items under 'clean the house,' 'take a shower' and then 'make dinner.' In total there are 7 things to do to clean the house; 1 thing to do to take a shower; and 4 things to do to make dinner. If everything on Trey's list takes 10 minutes to do, how many hours total will it take to complete Trey's list?
[Answer]:
On Trey's list there are 7 + 1 + 4 things to do = 12 things to do in total. Each thing takes 10 minutes to do, so 10 minutes x 12 things = 120 minutes. An hour has 60 minutes in it, so 120 minutes / 60 minutes in an hour = 2 total hours it will take Trey to complete his list.
So the answer is 2.