[Question]: Kirsty collects small models of animals. The last time she bought some, each one cost $0.45. She saves enough to buy 30 models, but when she goes to the shop, she finds out that the price had increased to $0.50. How many models can she buy now?
[Answer]: Kirsty has 0.45 × 30 = $13.50 to spare to buy her models. She can only buy 13.50 ÷ 0.50 = 27 models as the price of each individual model has increased.
So the answer is 27.

[Question]: Akeno spent $2985 to furnish his apartment. Lev spent one-third of that amount on his apartment and Ambrocio spent $177 less than Lev. How many dollars more did Akeno spend than the other 2 people combined?
[Answer]: Lev = (1 / 3) * 2985 = $995. Ambrocio = 995 - 177 = $818. 2985 - (995 + 818) = $1172. Akeno spent $1172 more than Lev and Ambrocio combined.
So the answer is 1172.

[Question]: Nicki spent the last year running a lot. For the first half of the year, she ran a total of 20 miles per week. For the second half of the year, she increased the mileage to 30 miles per week. How many miles total did she run for the year?
[Answer]:
Each half of the year consists of 52 / 2 = 26 weeks. For the first half of the year, Nicki ran a total of 20 * 26 = 520 miles. For the second half of the year, Nicki ran a total of 30 * 26 = 780 miles. For the entire year, Nicki ran a total of 520 + 780 = 1,300 miles.
So the answer is 1300.