Question: Mary Anne drinks 1/5 of a bottle of sparkling water every night at dinner. If each bottle costs her $2.00, how much does she spend on sparkling water every year?
Answer: She drinks 1 / 5 of a bottle of sparkling water every night so over an entire year she drinks .2 * 365 = 73 bottles of sparkling water. Every bottle costs $2.00 and she drinks 73 bottles a year so she spends 2 * 73 = $146.00 a year on sparkling water. The answer is 146.

Question: A cooler is filled with 24 cans of cherry soda and orange pop. If there are twice as many cans of orange pop as there are of cherry soda, how many cherry sodas are there?
Answer: There are C cans of cherry soda in the cooler. There are twice as many cans of orange pop, so there are 2C cans of orange pop in the cooler. In all, there are C + 2C = 3C = 24 cans in the cooler. Therefore, there are C = 24 / 3 = 8 cans of cherry soda in the cooler. The answer is 8.

Question: Annie likes to eat cookies. She ate 5 cookies on Monday, two times more on Tuesday, and 40% more on Wednesday than on Tuesday. How many cookies did Annie eat during these three days?
Answer: Annie ate 5 * 2 = 10 cookies on Tuesday. On Wednesday Annie ate 40 / 100 * 10 = 4 more cookies than on Tuesday. This means Annie ate on Wednesday 10 + 4 = 14 cookies. So in total during these three days Annie ate 5 + 10 + 14 = 29 cookies. The answer is 29.

Question: John uses 5 liters of fuel per km to travel. How many liters of fuel should John plan to use if he plans to travel on two trips of 30 km and 20 km?
Answer:
The first trip will use 30 * 5 = 150 liters of fuel. The second trip will use 20 * 5 = 100 liters of fuel. The total liters of fuel are 150 + 100 = 250 liters. The answer is 250.