Q: Samson is going to another town which is 140 km away. He will use his car that uses ten liters of gasoline for a distance of 70 km. How many liters of gasoline will Samson need for a one-way trip?
A: Samson will need 140 km / 70 km = 2 ten liters of gasoline for a one - way trip to a town. Therefore, he will need a total of 2 x 10 liters = 20 liters of gasoline. The answer is 20.

Q: Brenda is a vet who needs to spay some cats and twice as many dogs. If she needs to spay 21 animals total today, how many cats does she need to spay?
A: Let c be the number of cats Brenda needs to spay and d be the number of dogs. We know that c + d = 21 and d = 2c. Substituting the second equation into the first, we get c + 2c = 21. Combining like terms, we get 3c = 21. Dividing both sides by 3, we get c = 7. The answer is 7.

Q: Timothy and Theresa go to the movies very often. Timothy went to the movies 7 more times in 2010 that he did in 2009. In 2009, Timothy went to the movies 24 times.In 2010 Theresa went to see twice as many movies as Timothy did, but in 2009, she only saw half as many as he did. How many movies did Timothy and Theresa go on in both 2009 and 2010?
A:
In 2010 Timothy watched 24 + 7 = 31 movies. In 2010 Theresa watched 31 * 2 = 62 movies. In 2009 Theresa watched 24 / 2 = 12 movies. In both 2009 and 2010 Timothy and Theresa watched 24 + 31 + 62 + 12 = 129 movies. The answer is 129.