Question: Andrew has 2 3-hour appointments today. He spends the rest of his 8-hour workday stamping permit applications. If he can stamp 50 permit applications an hour, how many permits total does he stamp today?
Answer with step-by-step thinking: First find the total length of the appointments: 2 appointments * 3 hours / appointment = 6 hours. Then subtract that time from the length of Andrew's workday to find how many hours he spends stamping permits: 8 hours - 6 hours = 2 hours. Then multiply that number by the number of permits he can stamp per day to find how many permits he stamps: 50 permits / hour * 2 hours = 100 permits.
So the answer is 100.


Question: There were 200 students on a field playing football. Suddenly a military plane flew by, and 3/4 of the students looked up. How many eyes saw the airplane?
Answer with step-by-step thinking: If there were 200 students on the field and 3 / 4 of the students looked up at the flying plane, 3 / 4 * 200 = 150 students saw the plane. Since each student has two eyes, the number of eyes that looked at the plane is 2 * 150 = 300 years.
So the answer is 300.


Question: John sends his son to prep school. It cost $20,000 per semester. There are 2 semesters in the year. How much does it cost to send the kid to 13 years of school?
Answer with step-by-step thinking:
It cost 20000 * 2 = $40,000 a year. So it cost 40,000 * 13 = $520,000.
So the answer is 520000.