Answer the following question.
Tony can run a mile twice as fast as Tina, who with a time of 6 minutes is one-third as fast a runner as Tom. What are all three of their mile times when added together?
Step-by-step reasoning process: Since someone running twice as fast a mile as another person would mean they complete the mile in half as much time, this means Tony would run a mile in 6 / 2 = 3 minutes since Tina's time was 6 minutes. Since Tom is three times as fast as Tina, for the same reasons as above this means his time is 6 / 3 = 2 minutes. Altogether then, the total time for all three is then 6 + 3 + 2 = 11 minutes.
The answer is 11.

Answer the following question.
Tom dances 4 times a week for 2 hours at a time and does this every year for 10 years. How many hours did he dance?
Step-by-step reasoning process: He dances 4 * 2 = 8 hours per week. He dances for 52 * 10 = 520 weeks. So in total he danced for 8 * 520 = 4160 hours.
The answer is 4160.

Answer the following question.
If 2 machines in a factory make 10 cell phones each minute, how many machines would it take to make 50 cell phones a minute?
Step-by-step reasoning process: First, we need to determine how many cell phones each machine makes per minute. We do this by performing 10 / 2 = 5 cell phones each minute per machine. Next, we determine how many machines are needed in total by dividing the desired outcome of 50 by the rate of production of an individual machine, finding 50 / 5 = 10 machines needed.
The answer is 10.

Answer the following question.
Mandy bought 3 packs of black shirts and 3 packs of yellow shirts for her tennis team. The black shirts come in packs of 5, and the yellow shirts come in packs of 2. How many shirts did Mandy buy in all?
Step-by-step reasoning process: The number of black shirts is 3 5 = 15. The number of yellow shirts is 3 2 = 6. Mandy bought 15 + 6 = 21 shirts.
The answer is 21.