[Question]John rents a car to visit his family. It cost $150 to rent the car. He also had to buy 8 gallons of gas to fill it up and gas is $3.50 per gallon. The final expense is $.50 per mile. If he drove 320 miles how much did it cost?
[Answer]The gas cost 8 * 3.5 = $28. The mileage expenses cost 320 * .5 = $160. So in total he paid 150 + 28 + 160 = $338. The answer is 338.

[Question]The total cost of staying at High Services Hotel is $40 per night per person. Jenny and two of her friends went to the hotel and stayed for three nights. What's the total amount of money they all paid together?
[Answer]If each of them stayed 3 nights, the total cost per person is $40 / night * 3 nights = $120. Since they were three, the combined cost is $120 + $120 + $120 = $360. The answer is 360.

[Question]Harry is 50 years old. His father is currently 24 years older than he is. How old was his mother when she gave birth to him if she is younger than his father by 1/25 of Harry's current age?
[Answer]Harry's father is 50 years + 24 years = 74 years old. Harry's mother is 1 / 25 * 50 years = 2 years younger than his father. So she is currently 74 years - 2 years = 72 years old. So when Harry was born, she was 72 years - 50 years = 22 years old. The answer is 22.

[Question]Jake has $5000. He spends $2800 on a new motorcycle, and then spends half of what's left on a concert ticket. Jake then loses a fourth of what he has left. How much money does he have left?
[Answer]
Jake has 5000 - 2800 = $2200 left. Jake has 2200 / 2 = $1100. Jake loses 1100 / 4 = $275. Jake has 1100 - 275 = $825 left. The answer is 825.