Question: Three planes are going to the same place but each has a different number of passengers. The first plane has 50, the second had 60, and the third has 40. An empty plane can go 600 MPH, but each passenger makes it go 2 MPH slower. What is their average speed?
Answer: The first plane goes 100 MPH slower than empty because 50 x 2 = 100. The first plane goes 500 MPH because 600 - 100 = 500. The second plane goes 120 MPH slower because 60 x 2 = 120. The second plane goes 480 because 600 - 120 = 480. The third plane goes 80 MPH slower because 40 x 2 = 80. The third plane goes 520 MPH because 600 - 80 = 520. The total speed is 1500 because 500 + 480 + 520 = 1500. Their average speed is 500 because 1500 / 3 = 500. The answer is 500.
[Question]There are 35 bottles of milk on the grocery store shelf. Jason buys 5 of the bottles and Harry buys 6 more. How many bottles of milk are left on the store shelf after Jason and Harry purchased milk?
[Answer]Jason and Harry purchased a total of 5 + 6 = 11 bottles of milk. So, there are 35 - 11 = 24 bottles of milk left on the store shelf. The answer is 24.
Q: A road has four intersections. At the first intersection, there are 40 road signs showing different types of information mounted on the street poles. At the second intersection, 1/4 times more road signs than the first intersection are mounted on the street poles. The number of road signs at the third intersection is twice the number at the second intersection. If at the fourth intersection the number of road signs is 20 fewer than those at the third intersection, calculate the total number of road signs at the four intersections.
A: There are 1 / 4 * 40 = 10 more road signs at the second intersection than the first intersection. This means there are 40 + 10 = 50 road signs at the second intersection. The total number of road signs at the first and second intersection is 50 + 40 = 90. The third intersection has twice the number of road signs at the second intersection, meaning there are 2 * 50 = 100 road signs. The total number of road signs at first to the third intersection is 90 + 100 = 190 road signs. At the fourth intersection, the number is 20 fewer than at the third intersection, meaning there are 100 - 20 = 80 road signs. All four road intersections have 190 + 80 = 270 road signs in total. The answer is 270.
Question: A factory uses robots to manufacture batteries. For each battery that is made, it takes a robot 6 minutes to gather the materials for the battery and 9 minutes to create the battery. If the factory has 10 robots working on batteries at the same time, how many batteries can the robots manufacture in 5 hours?
Answer: For each battery that a robot makes, it takes 9 + 6 = 15 minutes to create the battery. In 60 minutes, one robot can make 60 / 15 = 4 batteries per hour. If the factory uses 10 robots at the same time, then they can produce 10 * 4 = 40 batteries per hour. At a rate of 40 batteries per hour, 10 robots can produce 40 * 5 = 200 batteries in 5 hours. The answer is 200.
[Question]Jon decides to take up baseball. He can throw a fastball at 80 miles per hour.  He goes through intense training 4 times for 4 weeks each time and at the end of the last one he can throw a ball 20% faster. How much speed (in mph) did he gain per week, assuming he gained an equal amount of speed (in mph) each week?
[Answer]He threw the ball 80 * .2 = 16 mph faster. He was training for 4 * 4 = 16 weeks. So he gained 16 / 16 = 1 mph per week. The answer is 1.
[Question]Matthew asked his children how many hotdogs they wanted for dinner. Both Ella and Emma agreed they wanted 2 hotdogs each. Luke said he could eat twice the amount of hotdogs as his sisters while Hunter said he could only eat 1 and half times the total amount of his sisters. How many hotdogs did Matthew need to cook?
[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.
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Ella wanted 2 while Emma wanted 2 so 2 + 2 = 4 hotdogs. Luke could eat twice as his sisters so 2 * 2 = 4 hotdogs. Hunter could eat 1 1 / 2 times the amount of his sisters so 1.5 * 4 = 6 hotdogs. All total, Matthew needs to cook, 4 + 4 + 6 = 18 hot dogs. The answer is 14.