[Question]: Tom spends $250 to buy gems in a game he plays. The game gives 100 gems for each dollar you spend. Since he bought so many gems he got a 20% bonus of more gems. How many gems did he end up with?
[Answer]: He bought 250 * 100 = 25000 gems. He got a 25,000 * .2 = 5,000 gem bonus. So he got a total of 25000 + 5000 = 30,000 gems.
So the answer is 30000.

[Question]: On an American flag, the first stripe is red and half of the remaining stripes are also red. Each flag has 13 stripes. John buys 10 flags. How many red stripes are there?
[Answer]: There are 13 - 1 = 12 stripes left. So there are 12 / 2 = 6 red stripes. So the total number of red stripes is 6 + 1 = 7 red stripes. So he has a total of 7 * 10 = 70 red stripes.
So the answer is 70.

[Question]: Keanu's motorcycle can store 8 liters of gasoline. If his destination is 280 miles away and his motorcycle consumes 8 liters of gasoline per 40 miles, how many times does Keanu have to refill his motorcycle with gasoline if he will make a round trip?
[Answer]:
The total number of miles for a round trip is 280 x 2 = 560. Therefore, he needs to refill his motorcycle 560 / 40 = 14 times.
So the answer is 14.