Answer the following question.
Harry decided to buy some balloons for his friend's birthday party. One balloon costs $0.5, and a pack of 10 balloons is cheaper and costs only $3. Finally, Harry wants to bring to the party exactly 14 balloons. How much did he need to pay for them?
Step-by-step reasoning process: To buy 14 balloons, Harry should buy one pack of 10, and 14 - 10 = 4 separate balloons. The price of 4 balloons is 4 * 0.5 = $2. In total, the pack and separate balloons would cost Harry in total 3 + 2 = $5.
The answer is 5.

Answer the following question.
John can produce 1000 tires a day. It cost $250 to produce each tire. He manages to sell them for 1.5 times as much. He could sell 1200 tires a day if his factory was able to produce more. How much money does he lose out a week by not being able to produce all the tires?
Step-by-step reasoning process: He sells each tire for 250 * 1.5 = $375. That means he makes a profit of 375 - 250 = $125 per tire. His production is 1200 - 1000 = 200 short. So he loses out on 125 * 200 = $25,000 a day. So he loses out on 25000 * 7 = $175,000 a week.
The answer is 175000.

Answer the following question.
Carson is going to spend 4 hours at a carnival. The wait for the roller coaster is 30 minutes, the wait for the tilt-a-whirl is 60 minutes, and the wait for the giant slide is 15 minutes. If Carson rides the roller coaster 4 times and the tilt-a-whirl once, how many times can he ride the giant slide? (Wait times include the time actually spent on the ride.)
Step-by-step reasoning process: First figure out how many minutes Carson spends at the carnival by multiplying the number of hours he's there by the number of minutes per hour: 4 hours * 60 minutes / hour = 240 minutes. Then figure out how long Carson spends waiting for the roller coaster by multiplying the wait time per ride by the number of rides: 4 rides * 30 minutes / ride = 120 minutes. Now subtract the time Carson spends on the roller coaster and tilt - a - whirl from the total time he spends at the park to find out how much time he has left: 240 minutes - 120 minutes - 60 minutes = 60 minutes. Now divide the time Carson has left by the wait time for the giant slide to see how many times he can ride it: 60 minutes / 15 minutes / ride = 4 rides.
The answer is 4.

Answer the following question.
For Roger's phone to function optimally, he can have a maximum of 50 apps on his phone. However, the recommended number of apps is 35. If Roger has twice the recommended number of apps, how many apps must he delete for his phone to function optimally again?
Step-by-step reasoning process: Roger has 35 x 2 = 70 apps on his phone. He needs to delete 70 - 50 = 20 apps.
The answer is 20.