Q: Two siblings, Eman and Frank, agreed to buy a new computer table, computer chair, and a joystick. The computer table costs $140, the computer chair costs $100, and the joystick costs $20. Eman agreed to pay for the computer chair while Frank agreed to pay for the computer table. Then Frank agreed to pay 1/4 of the price of the joystick and the rest will be paid by Eman. How much more money will Frank spend than Eman?
A: Frank will pay $20 x 1 / 4 = $5 for the joystick. Eman will pay $20 - $5 = $15 for the joystick. So, Frank will pay a total of $140 + $5 = $145. While Eman will pay a total of $100 + $15 = $115. Therefore, Frank will spend $145 - $115 = $30 more than Eman. The answer is 30.
Question: Tony loved to solve difficult pen and paper puzzles. He did a warm-up puzzle that only took 10 minutes and after that he did 2 puzzles that each took 3 times as long. How long did he spend solving puzzles?
Answer: Each of the long puzzles took 3 * 10 = 30 minutes to solve. So he spent 30 * 2 = 60 minutes solving them. That means he spent 60 + 10 = 70 minutes solving puzzles. The answer is 70.
[Question]Jett bought a cow from the market at $600 and took it to his farm. He spent $20 every day to buy food. He also used $500 to vaccinate and deworm the cow. If he sold the cow for $2500 after 40 days, calculate the profit he made from selling back the cow to the market.
[Answer]The total cost of food that the cow ate for the forty days is 40 * $20 = $800. To feed and maintain the health of the cow, the total expenses Jett used is $500 + $800 = $1300. With the expenses, Jett used $1300 + $600 = $1900 on the cow. If he sold the cow at $2500, Jett made a profit of $2500 - $1900 = $600. The answer is 600.
Q: On a particular day, a car traveled from Ningi to Zipra in 80% of the time it traveled from Ngapara to Zipra. If the car took 60 hours to travel from Ngapara to Zipra, calculate the total time the car traveled that day.
A: If the car traveled from Ningi to Zipra in 80% of the time it traveled from Ngapara to Zipra, it took 80 / 100 * 60 = 48 hours to travel from Ningi to Zipra. The total travel time that day is 48 + 60 = 108 hours. The answer is 108.
Question: Jeff has 16 GB of storage on his phone. He is already using 4 GB. If a song takes up about 30MB of storage, how many songs can Jeff store on his phone? (There are 1000 MB in a GB).
Answer: Jeff has 16 - 4 = 12GB left over on his phone. Therefore, he has 12 * 1000 = 12,000MB. Therefore, he can store 12,000 / 30 = 400 songs. The answer is 400.
Q: Blanch has 15 slices of pizza in the fridge. During breakfast, she eats 4 slices. At lunch, Blanch eats 2 slices, then takes two slices as a snack. Finally, she consumes 5 slices for dinner. How many slices of pizza are left?
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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During breakfast, Blanch has 15 - 4 = 11 slices left. At lunch, she still has 11 - 2 = 9 slices left. After the snack, there are still 9 - 2 = 7 slices left. Finally after dinner, Blanch has 7 - 5 = 2 slices left. The answer is 2.