Answer this question:9 years from now, John will be 3 times as old as he was 11 years ago. How old is he now?
Let J represent John’s age. We have J + 9 = 3(j − 11). So, J + 9 = 3J − 33. So, 9 = 2J − 33. So, 42 = 2J. Which means that John’s age is J = 42 / 2 = 21.
The answer is 21.

Answer this question:Liam and Claire picked and sold oranges to save for their mother's birthday gift. Liam picked 40 oranges and sold them at $2.50 for 2 while Claire picked 30 oranges and sold them at $1.20 each. If all of their oranges were sold, how much are they going to save for their mother's birthday gift?
Liam sold 40 / 2 = 20 sets of oranges that cost $2.50 for each set. So, Liam earned $2.50 x 20 = $50. Claire earned $1.20 x 30 = $36. Thus, they were able to save $50 + $36 = $86 for their mother's birthday gift.
The answer is 86.

Answer this question:Five coworkers were talking during the lunch break. Roger, the oldest one, said that he has the same amount of experience in years as all four of the others combined and that his retirement should come when he accumulates 50 years of experience. Peter said that when he came to the company his daughter was 7 years old, and now she is 19 years old. Tom then said he has twice as many years of experience as Robert. Robert said that he has 4 years of experience less than Peter but 2 more years of experience than Mike. How many more years does Roger have to work before he retires?
Peter has 19 – 7 = 12 years of experience. Robert has 12 – 4 = 8 years of experience. Mike has 8 – 2 = 6 years of experience. Tom has 2 * 8 = 16 years of experience. Roger has 12 + 8 + 6 + 16 = 42 years of experience. Roger has to work another 50 – 42 = 8 years before he retires.
The answer is 8.

Answer this question:Salvadore earned $1956. Santo earned half of what Salvadore earned. How much money did the two men earn together?

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.
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Santo = (1 / 2) 1956 = $978. 1956 + 978 = $2934. Together Salvadore and Santo earned $2934.
The answer is 2934.