[Question]Dina has twice as many dolls as Ivy. 2/3 of Ivy's dolls are collectors editions. If Ivy has 20 collectors edition dolls, how many dolls does Dina have?
[Answer]Ivy has 20 / 2 * 3 = 30 dolls. Dina has 30 * 2 = 60 dolls. The answer is 60.

[Question]There are 28 garden gnomes in a yard. Three-fourths of them have red hats, and the rest have blue hats. Half the garden gnomes have big noses instead of small noses. If six gnomes with blue hats have big noses, how many gnomes with red hats have small noses?
[Answer]Half the gnomes have big noses, so 28 / 2 = 14 have big noses. Three - quarters of the gnomes have red hats, so 28 * 3 / 4 = 21 gnomes have red hats. There are 6 gnomes with blue hats and big noses, so there are 14 - 6 = 8 with red hats and big noses. Thus, there are 21 - 8 = 13 gnomes with red hats that have small noses. The answer is 13.

[Question]Phil likes to collect baseball cards. He buys a pack of twenty each week for a year, but then loses half of them one day in a fire. How many baseball cards does Phil have left?
[Answer]Since there are 20 cards in a pack and 52 weeks in a year, Phil starts by collecting 20 * 52 = 1040 baseball cards. He then loses half of them for 1040 / 2 = 520 cards remaining. The answer is 520.

[Question]Billy weighs 9 pounds more than Brad. Brad weighs 5 pounds more than Carl. If Carl weighs 145 pounds, how much does Billy weigh, in pounds?
[Answer]

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Brad weighs 145 + 5 = 150 pounds. Billy weighs 150 + 9 = 159 pounds. The answer is 159.