Q: Jillian had 80 oranges which she had bought to give to her friends. She divided each orange into ten equal pieces for each friend to get four pieces. How many friends were there?
A: If she divided each orange into 10 pieces, she got 80 * 10 = 800 pieces of orange. Since each friend received 4 pieces, there were 800 / 4 = 200 friends. The answer is 200.

Q: 24 gallons per second of water flows down a waterfall. If you have an empty basin that can hold 260 gallons of water. The basin leaks water at 4 gallons per second. how long would it take to fill the basin with water from the waterfall in seconds?
A: 24 gallons in minus 4 gallons out is 24 - 4 = 20 gallons per second. 260 gallons divided by 20 gallons per second 260 / 20 = 13 seconds. The answer is 13.

Q: Andy needs to drive from Salt Lake City to Los Angeles. The drive from Salt Lake City to Las Vegas is 420 miles. The drive from Las Vegas to Los Angeles is 273 miles. He wants to make the drive in 11 hours. What's the average minimum speed that Andy needs to drive to reach Los Angeles in 11 hours?
A:
The total distance of the trip is 420 + 273 = 693 miles. To make the trip Andy must drive 693 miles / 11 hours = 63 miles per hour. The answer is 63.