Q: The sum of the three numbers is 500. If the first number is 200, and the value of the second number is twice the value of the third number, find the value of the third number.
A: Let's say the third number is x. The sum of the second and third number is 500 - 200 = 300. Since the third number is x, the sum of the values of the second and third number is x + 2x = 300. This is 3x = 300. The value of the third number is x = 300 / 3. x = 100. The answer is 100.
Question: A blind cave scorpion survives by catching millipedes. It needs to eat lots of millipedes to survive: a total of 800 body segments every day. If it's already eaten one millipede with 60 segments and 2 millipedes that are twice as long, how many 50-segment millipedes does it need to eat to reach its daily total?
Answer: First, the number of segments in the 2 millipedes that are twice as long is 60 segments * 2 = 120 segments. Then one can multiply the segments by the 2 millipedes to find the total number of segments: 120 segments / millipede * 2 millipedes = 240 segments. In total, we then find the scorpion has eaten one 60 - segment millipede in addition to the 3 millipedes above for a total of 60 + 240 = 300 segments. So, the number of segments it still needs to eat are : 800 segments - 300 segments = 500 segments. Thus, it needs to eat an additional 500 segments / 50 segments / millipede = 10 millipedes. The answer is 10.
[Question]Thomas wants to throw a party for his best friend Casey. He needs to order enough chairs for all the party guests to sit in, one for each guest. First he orders 3 dozen chairs for 3 dozen guests he invites. Then he finds out that 1/3 of the guests want to bring a guest of their own, so Thomas needs to order more chairs. Eventually, Thomas finds out that 5 of the guests he originally invited can't make it. Thomas would also like to order 12 extra chairs just in case they need them. How many chairs is Thomas going to order for Casey's party?
[Answer]Thomas originally orders chairs for 3 dozen guests, 12 x 3 = 36 guests. Thomas finds out that 1 / 3 of the guests want to bring a guest of their own, 1 / 3 of 36 = 12. The 12 guests bring a guest of their own each, 36 guests + 12 guests = 48. Thomas finds out that 20 of the guests can't make it, 48 guests - 5 guests = 43. Thomas wants to order an extra 12 chairs, 43 + 12 = 55. Thomas will need 55 chairs for the party. The answer is 55.
Q: Daisy's Flower Shop sold 45 daisies on its first day. On their second day, they sold 20 more flowers than they did on their first day. On the third day, they sold 10 less than twice the flowers that were sold than on the second day. If the flower shop sold a total of 350 daisies for 4 days, how many daisies were sold on the 4th day?
A: The flower shop sold 45 + 20 = 65 daisies on the second day. Twice the number of flowers on the second day is 65 x 2 = 130. So, the flower shop sold 130 - 10 = 120 daisies on the third day. The total daisies sold for 3 days was 45 + 65 + 120 = 230. Therefore, 350 - 230 = 120 daisies were sold on the 4th day. The answer is 120.
Question: The Martin family goes to the mall to get ice cream. A kiddie scoop is $3. A regular scoop is $4. A double scoop is $6.  Mr. and Mrs. Martin each get the regular scoop. Their two children each get the kiddie scoop. Their three teenage children each get double scoops. How much money does Mrs. Martin pay the cashier?
Answer: The two regular scoops cost $4 x 2 = $8. The two kiddie scoops cost $3 x 2 = $6. The three double scoops cost $6 x 3 = $18. For all the ice creams they ordered, Mrs. Martin pays $8 + $6 + $18 = $32. The answer is 32.
Q: It takes a butterfly egg 120 days to become a butterfly. If each butterfly spends 3 times as much time as a larva as in a cocoon, how long does each butterfly spend in a cocoon?
A:

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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Let c be the amount of time the butterfly spends in a cocoon and l be the amount of time it spends as a larva. We know that l = 3c and l + c = 120. Substituting the first equation into the second equation, we get 3c + c = 120. Combining like terms, we get 4c = 120. Dividing both sides by 4, we get c = 30. The answer is 30.