[Question]: A 10 meters yarn was cut into 5 equal parts. If 3 parts were used for crocheting, how long was used for crocheting?
[Answer]: Each part is 10 / 5 = 2 meters long. Therefore, 2 x 3 = 6 meters of yarn were used for crocheting.
So the answer is 6.

[Question]: A small zoo houses a variety of 68 wild animals. After they send a gorilla family of six to a different zoo, they adopt a hippopotamus from another zoo. A while later, an animal rescue contacted them, and the zoo took in three endangered rhinos. Then one of their lionesses gave birth to cubs, and they opened a meerkat exhibit with twice as many meerkats as they had gained lion cubs. The zoo then had 90 animals in all. How many lion cubs were born at the zoo?
[Answer]: Let C be the number of lion cubs. There are 2C meerkats in the new exhibit. The zoo sent 4 gorillas away, so they had 68 - 6 = 62 animals left. They adopted a hippopotamus, so they had 62 + 1 = 63 animals. They took in 3 rhinos, so they had 63 + 3 = 66 animals. Thus, they had 90 - 66 = 24 new lion cubs and meerkats. Therefore, they had C + 2C = 3C = 24 new lion cubs as meerkats. Hence, there were C = 24 / 3 = 8 lion cubs born.
So the answer is 8.

[Question]: 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?
[Answer]:
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.
So the answer is 129.