Paula wants to ride the go-karts 1 time and the bumper cars 4 times. It costs 4 tickets to ride the go-karts and 5 tickets to ride the bumper cars. How many tickets does Paula need? Give the rationale and then the answer.
Let's think step by step. Paula wants to go on the go - kart 1 time and the bumper cars 4 times. The number of tickets needed for the go - karts is 1 × 4 = 4. The number of tickets needed for the bumper cars is 4 × 5 = 20. Paula needs 4 + 20 = 24 tickets.. The answer is: 24.

A couple with two children, ages 6 and 10 years old, decided to go to an amusement park. The regular ticket costs $109, but children below 12 years old have a $5 discount. If they gave the cashier $500, how much change will they receive? Give the rationale and then the answer.
Let's think step by step. The ticket costs 109 - 5 = $104 for each child. So the ticket cost of the two children is 104 x 2 = $208. The couple needs to pay the regular price, so it's 109 x 2 = $218. Thus, the family needs to pay a total of 208 + 218 = $426. Therefore, their change is 500 - 426 = $74.. The answer is: 74.

Every day, while going to school, Shane drives a total of 10 miles. Calculate the total distance he drives in an 80 day semester from home to school and back. Give the rationale and then the 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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Let's think step by step. To go to school and back, Shane drives 2 * 10 = 20 miles per day. In 80 days of a semester, he drives for 80 * 20 = 1600 miles.. The answer is: 1600.