[Question]A factory decides to stop making cars and start making motorcycles instead. When it made cars, per month, it cost $100 for materials, they could make 4 cars, and they sold each car for $50. Now that they make motorcycles it costs $250 for materials, but they sell 8 of them for $50 each. How much more profit do they make per month selling motorcycles instead of cars?
[Answer]They sold $200 worth of cars each month because 4 x 50 = 200. They made $100 a month off cars because 200 - 100 = 100. They sold $400 worth of motorcycles each month because 8 x 50 = 400. They make $150 a month off motorcycles because 400 - 250 = 150. They make $50 more a month off motorcycles than cars because 150 - 100 = 50. The answer is 50.

[Question]Mark realizes that a lot of the friends on his friends list are people he doesn't talk to anymore. He keeps 40% of his friends list and then contacts the rest. Of those only 50% respond. He removes everyone who did not respond. If he had 100 friends how many does he have left after the removal?
[Answer]He contacted 1 - .4 = .6 of his friends. So he contacted 100 * .6 = 60 people. So he removes 60 / 2 = 30 people. So he has 100 - 30 = 70 friends left. The answer is 70.

[Question]Eric sorted 150 colored pencils into 5 containers for his art class. Before class, another teacher brought him 30 more pencils. How many can he evenly distribute between the five containers now?
[Answer]Before the extra colored pencils, he had 150 / 5 = 30 colored pencils in each container. With the other colored pencils, he is given he now has 150 + 30 = 180 colored pencils. If you distribute them evenly each container should have 180 / 5 = 36 colored pencils. The answer is 36.

[Question]Tim buys 3 loaves of bread. Each loaf of bread has 20 slices. He pays for the 3 loaves of bread with 2 $20 bills. He gets $16 change. How much does each slice cost, in cents?
[Answer]
He gave 2 * 20 = $40. So the total cost was 40 - 16 = $24. That means each slice costs 24 / 3 = $8. That means it costs 8 * 100 = 800 cents. So each slice is 800 / 20 = 40 cents. The answer is 40.