Tim bought a new machine to help him picking apples from apple trees. If this new machine can pick 20 apples every 30 minutes and Tim wants to pick 500 apples today. How many hours he is going to take?	Select.
A) 10
B) 12.5
C) 15
D) 17.5
E) 20
The machine picks 20 apples every 30 minutes = 40 apples/hour. 500 apples is going to take 500/40 apples/hour = 12.5 hours. Correct Option: 12.5. Answer: 12.5
<result>B</result>
Tim bought a new machine to help him picking apples from apple trees. If this new machine can pick 20 apples every 30 minutes and Tim wants to pick 500 apples today. How many hours he is going to take?