James buys a weight vest for $250. He then buys 200 pounds of weight plates for $1.2 per pound. A 200-pound weight vest would cost $700 but there is a $100 discount. How much does he save with his vest?
Let's think: The weight plates cost 200 * 1.2 = $240. So his vest cost 250 + 240 = $490. He could get the other vest for 700 - 100 = $600. So he saved 600 - 490 = $110.. The answer is: 110.

Three years ago, Rosie purchased an art piece for $4000. The same art piece will be three times as much in another three years. How much money will the art piece have increased by?
Let's think: If the art piece was bought at $4000, and its price in three years will be three times its buying price, it will be worth 3 * $4000 = $12000 in another three years. The price of the art piece will increase by $12000 - $4000 = $8000.. The answer is: 8000.

Bill gets a flat-screen TV that measures 48 inches by 100 inches. His brother Bob gets a TV that measures 70 inches by 60 inches. If the TVs weigh 4 oz per square inch of screen space, how much more does the heavier TV weigh in pounds? (There are 16 ounces per pound).
Let's think: First find the screen area of Bill's TV: 48 inches * 100 inches = 4800 square inches. Then find the screen area of Bob's TV: 70 inches * 60 inches = 4200 square inches. Then subtract the size of the smaller TV from the size of the bigger TV to find the size difference: 4800 square inches - 4200 square inches = 600 square inches. Then multiply the size difference by the weight per square inch to find the weight difference: 600 square inches * 4 oz / square inch = 2400 oz. Then divide the weight difference in ounces by the number of ounces per pound to find the weight difference in pounds: 2400 oz / 16 oz / pound = 150 pounds.. The answer is: 150.

Chandler can eat a total of 23 apples and Lucy can eat a total of 19 apples per week. If the farmer only delivers 1 time per month, how many apples do they have to order for a month?
Let's think:
Chandler and Lucy can eat 23 + 19 = 42 apples per week. Therefore, they have to order 42 x 4 = 168 apples for a month.. The answer is: 168.