Question: Mrs. Finley's class has 24 students, and Mr. Johnson's class has 10 more than half the number in Mrs. Finley's class. How many students are in Mr. Johnson's class?
Answer: Half the number in Mrs. Finley's class is 24 / 2 = 12. Mr. Johnson has 12 + 10 = 22 students. The answer is 22.

Question: Andy and Bob went to the canteen to buy snacks. They spent the same amount. Andy bought a can of soda at $1 and two hamburgers at $2 each. Bob ordered two sandwiches for $3 and a can of fruit drink. How much did Bob's fruit drink cost?
Answer: Two hamburger cost 2 x $2 = $4. So, Andy spent $1 + $4 = $5. Therefore, Bob's fruit drink cost $5 - $3 = $2. The answer is 2.

Question: Susan wants to throw a party for her mom. She is planning on having 30 guests. For dinner she is making a recipe that makes 2 servings each. Each batch of the recipe calls for 4 potatoes and 1 teaspoon of salt. A potato costs $.10 and a container of salt costs $2 at the supermarket. If each container of salt has 5 teaspoons, how much money will Susan spend on food?
Answer: Susan needs to make 30 / 2 = 15 batches of the recipe. Therefore, she will need 15 * 4 = 60 potatoes. She will also need 1 * 15 = 15 teaspoons of salt. Thus she will have to buy 15 / 5 = 3 containers of salt. Therefore, she will spend 60 * $.1 = $6 on potatoes and 3 * $2 = $6 on salt. Thus, she will spend $6 + $6 = $12 on food. The answer is 12.

Question: Penny has $20. Penny buys 4 pairs of socks for $2 a pair and a hat for $7. How much money does Penny have left?
Answer:
Penny buys 4 pairs of socks for $2 x 4 = $8. In total, Penny spent $8 + $7 = $15 on 4 pairs of socks and a hat. Penny has $20 - $15 = $5 left after buying 4 pairs of socks and a hat. The answer is 5.