Question: Kayla and Theresa went to buy some chocolate bars and soda cans. Theresa bought twice the number of chocolate bars and soda cans Kayla bought. If Theresa bought 12 chocolate bars and 18 soda cans, how many chocolate bars and soda cans did Kayla buy in total?
Answer: Kayla bought 12 chocolate bars / 2 = 6 chocolate bars. She also bought 18 soda cans / 2 = 9 soda cans. The total number of chocolate bars and soda cans Kayla bought is 6 chocolate bars + 9 soda cans = 15 items. The answer is 15.

Question: Paul has five dogs. For every 10 pounds they weigh, they need 1 pound of dog food per day. One weighs 20 pounds. One weighs 40. Another weighs 10. One weighs 30 and the final one weighs 50 pounds. How much dog food does he need each day?
Answer: The dog's total weight is 150 because 20 + 40 + 10 + 30 + 50 = 150. They need 15 pounds a day because 150 / 10 = 15. The answer is 15.

Question: Lyle wants to buy himself and his friends a sandwich and a pack of juice. A sandwich costs $0.30 while a pack of juice costs $0.2. If Lyle has $2.50, how many of his friends can have a sandwich and a pack of juice?
Answer: A sandwich and a pack of juice cost $0.3 + $0.2 = $0.50. With Lyle's $2.50, he can buy $2.50 / $0.50 = 5 sets of sandwiches and juice. Therefore, 5 - 1 = 4 of his friends can have a sandwich and a pack of juice since the other 1 set is for Lyle himself. The answer is 4.

Question: Teresa scored 70 marks in science, 80 in music, 85 in social studies, and the physics exam, which was the hardest test that Teresa had ever taken in her entire life, she scored half as many marks as she scored in music. Calculate the total marks Teresa scored in all the subjects.
Answer:
The total marks of science and music are 70 + 80 = 150. When you add the marks she scored in social studies, the full marks become 150 + 85 = 235. She scored half as many marks in physics as she scored music, totaling 1 / 2 * 80 = 40 marks. When you add the marks she scored in physics to the total marks of the other subjects, the full marks become 235 + 40 = 275. The answer is 275.