Duke was at a garage sale when he spotted DVDs on sale. They were separated by price into 2 different boxes. In the first box, he found 10 movies that he wanted. These were $2.00 apiece. The second box was marked $5 each and he found 5 movies he wanted. What was the average price of each of the DVDs he bought?
Let's think: In the first box he bought 10 DVDs at $2.00 each, so he paid 10 * 2 = $20.00. In the second box he bought 5 DVDs at $5.00 each, so he paid 5 * 5 = $25.00. He bought 10 + 5 = 15 DVDs. He spent $20 + $25 = $45.00. The average price of each DVD is $45 / 15 = $3.00 each.. The answer is: 3.

John's neighbor tells him to walk his dog for 1 hour each day for a total of $10. He does this for April, save for the 4 Sundays in April. He later spent $50 on books and gave his sister Kaylee the same amount. How much money did John have left?
Let's think: April has 30 days, so if he didn't walk the dog on Sundays, he worked for a total of 30 days - 4 days = 26 days. If each day he earned $10, he ends up with 26 days * $10 / day = $260 . After buying books and giving his sister $50, he ends up with $260 - $50 - $50 = $160.. The answer is: 160.

A superhero can use superhuman speed to run 10 miles in 4 minutes. The supervillain has an Evil-Mobile that drives 100 miles per hour. How many miles farther can the superhero run in an hour than the supervillain can drive?
Let's think: There are 60 minutes in an hour, so the superhero will run 60 / 4 = 15 intervals of 10 miles in an hour. Thus, the superhero can run 15 * 10 = 150 miles in an hour. The superhero can run 150 - 100 = 50 miles farther than the supervillain can drive in an hour.. The answer is: 50.

John buys a vacuum cleaner for $250 and a dishwasher for $450. She has a $75 off coupon. How much did he spend?
Let's think:
The combined price was 250 + 450 = $700. So he paid 700 - 75 = $625.. The answer is: 625.