Ignatius owns 4 bicycles. A friend of his owns different types of cycles, which have three times are many tires as Ignatius's bikes have. He has one unicycle, a tricycle, and the rest are bikes. How many bicycles does the friend own?
Let's think: Ignatius has 8 tires because 2 x 4 = 8. His friend has 24 tires because 3 x 8 = 24. There are 20 bicycle wheels because 24 - 1 - 3 = 20. He has 10 bicycles because 20 / 2 = 10.. The answer is: 10.

The county fair was hosting a pumpkin contest to see who could grow the biggest pumpkin in pounds. Brad entered his pumpkin with a weight of 54 pounds. Jessica's was half the weight of Brad's. Betty's pumpkin weight 4 times the amount of Jessica's pumpkin. What is the difference between the heaviest and lightest pumpkin in pounds?
Let's think: Jessica's pumpkin weighs half the weight of Brad's 54 - pound pumpkin so 54 / 2 = 27 pounds. Betty's pumpkin weighs 4 times the amount of Jessica's 27 - pound pumpkin so it weighs 4 * 27 = 108. Betty has the heaviest pumpkin at 108 pounds while Jessica's is the lowest at 27 pounds so the difference is 108 - 27 = 81 pounds.. The answer is: 81.

Fred had 236 dollars to spend on 6 books. After buying them, he had 14 dollars. On average, how much did each book cost?
Let's think: Fred spent $236 - $14 = $222 on books. The cost per book is $222 / 6 books = $37.. The answer is: 37.

Carson is refilling his tires. Each tire can hold 500 cubic inches of air. Two of the tires are completely flat and empty. One tire is 40% full and the last tire is 70% full. If Carson injects 50 cubic inches of air with each pump, how many pumps will it take him to fill all the tires?
Let's think:
First, if the a full tire needs 500 cubic inches of air, then two empty tires need: 500 cubic inches / tire * 2 tires = 1000 cubic inches. Accordingly, the 40% - full tire needs 500 cubic inches * (100% - 40%). So, we find the 40% - full tire needs 500 cubic inches * (60%) = 300 cubic inches. And, the 70% - full tire needs 500 cubic inches * (100% - 70%). So, the 70% - full tire needs 500 cubic inches * (30%) = 150 cubic inches. Now add up the needs of all the tires to find the total number of cubic inches needed: 1000 cubic inches + 300 cubic inches + 150 cubic inches = 1450 cubic inches. Finally, if the pumps each hold 50 cubic inches, the total number of pumps needed is 1550 cubic inches / 50 cubic inches / pump = 29 pumps.. The answer is: 29.