[Question]: Judy uses 10 pencils during her 5 day school week. A 30 pack of pencils costs $4. How much will she spend on pencils over 45 days?
[Answer]: She uses 2 pencils a day because 10 / 5 = 2. She will use 90 pencils in 45 days because 2 x 45 = 90. She will need 3 packs of pencils because 90 / 30 = 3. She will spend $12 because 3 x 4 = 12.
So the answer is 12.

[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]: 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]: Santino has 2 papaya trees and 3 mango trees. If each papaya tree produces 10 papayas and each mango tree produces 20 mangos, how many fruits does Santino have in total?
[Answer]:
Santino has 2 * 10 = 20 papaya fruits. Santino has 3 * 20 = 60 mango fruits. In total, Santino has 20 + 60 = 80 fruits.
So the answer is 80.