Question: For homework, Juan's teacher asked everyone in the class, to write down the different types of transportation (cars, trucks, bicycles, skateboards etc) they saw on their way home that afternoon. After school, Juan walked home and saw the following: 15 cars, 3 bicycles, 8 pickup trucks and 1 tricycle. How many tires in total were there on the vehicles Juan saw?
Answer: Step-by-step reasoning process: He saw 15 cars and 8 trucks so 15 + 8 = 23 vehicles. Those 23 vehicles have 4 wheels each so 23 * 4 = 92 wheels. Bicycles have 2 wheels each and he saw 3 bikes so 2 * 3 = 6 wheels. Tricycles have 3 wheels each and he saw 1 tricycle so 1 * 3 = 3 wheels. In total, Juan saw 92 + 6 + 3 = 101 wheels.
So the answer is 101.

Question: Adam's father deposited $2000 in the bank. It receives 8% interest paid throughout the year, and he withdraws the interest as soon as it is deposited. How much will Adam's father have, including his deposit and the interest received after 2 and a half years?
Answer: Step-by-step reasoning process: The annual interest is 2000 * 8 / 100 = $160. Interest for two and a half years is 160 * 2.5 = $400. So, Adam's father will have 2000 + 400 = $2400 after 2 and a half years.
So the answer is 2400.

Question: Hannah is at a restaurant. She spends $23 in total on an entree and a dessert. If the entree costs $5 more than the dessert, how much does the entree cost, in dollars?
Answer: Step-by-step reasoning process: Let D be the cost of the dessert in dollars. The entree costs D + 5 dollars. D + (D + 5) = 23. 2D + 5 = 23. 2D = 18. D = 9. The entree costs $14.
So the answer is 14.

Question: Christina walks 7km to school every day from Monday to Friday. She returns home covering the same distance. Last Friday her mother asked her to pass by her friend, which is another 2km away from the school in the opposite distance from home. How many kilometers did Christina cover that week?
Answer:
Step-by-step reasoning process: One trip to school is 2 * 7 km = 14km. In one week, Christina walks 14 km / day * 5 days / week = 70km to school. The extra trip to her mum's friend added 2 km * 2 = 4km to her travel distance. Her total distance was thus 70 km + 4 km = 74 km.
So the answer is 74.