Q: Travis and his brother joined a trick-or-treat event. They collected 68 pieces of candy altogether. Each of them ate 4 pieces of candy after the event. How many pieces of candy were left?
A: They ate a total of 4 x 2 = 8 pieces of candy after the event. So, Travis and his brother have 68 - 8 = 60 pieces of candy left. The answer is 60.

Q: Conner has a dune buggy that he rides in the desert. On flat sand, it can ride at a speed of 60 miles per hour. When traveling on downhill slopes, it can race at 12 miles per hour faster than it can when it is on flat sand. And when riding on an uphill inclined slow, it travels at a speed 18 miles per hour slower than when it is riding on flat sand. If Conner rides his dune buggy one-third of the time on flat sand, one-third of the time on uphill slopes, and one-third of the time on downhill slopes, what is his average speed in miles per hour?
A: 12 mph faster than 60mph is 60 + 12 = 72 mph. 18 mph slower than 60 mph is 60 - 18 = 42 mph. If he spends 1 / 3 of the time at each of these three speeds, then he averages (60 + 72 + 42) / 3 = 58 mph. The answer is 58.

Q: A total of 107 oranges are picked by Del and Juan. Del picked 23 on each of 2 days and Juan picked the rest. How many oranges did Juan pick?
A:
Del = 23 * 2 = 46 oranges. 107 - 46 = 61 oranges. Juan picked 61 oranges. The answer is 61.