Q: After a visit to the newly opened aquarium, 40 percent of the aquarium visitors fell ill from a mysterious disease. If there were 500 visitors, how many of them did not fall ill?
A: If there were 500 visitors, and 40% of them fell ill, the number of visitors who fell ill is 40 / 100 * 500 = 200 people. The number of visitors who did not get ill is 500 - 200 = 300. The answer is 300.
Question: Nick is asking all his co-workers to chip in for a birthday gift for Sandra that costs $100. The boss agrees to contribute $15, and Todd volunteers to contribute twice as much since he always has to one-up everyone. If the remaining 5 employees (counting Nick) each pay an equal amount, how much do they each pay?
Answer: First find Todd's contribution by doubling the boss's contribution: $15 * 2 = $30. Now subtract Todd and the boss's contributions to find out how much still needs to be paid: $100 - $30 - $15 = $55. Now divide the remaining cost by the number of employees to find the cost per employee: $55 / 5 employees = $11 / employee. The answer is 11.
[Question]A train takes 2 hours longer to go an equal distance of a car. If the car and the train leave station A at the same time, and the car reaches station B 4.5 hours later, calculate the combined time the car and the train take to reach station B.
[Answer]Since the train takes 2 hours longer to go an equal distance as the car, to reach station B, the train took 4.5 + 2 = 6.5 hours. Together, the train and the car take a total of 6.5 + 4.5 = 11 hours to travel from station A to station B. The answer is 11.
Q: An investment bank gives 10 percent interest at the end of every month. How much money in total will you have, including interest, at the end of 2 months if you invest $300?
A: After the first month you get 10 / 100 * $300 = $30 interest. After the first month you will have $300 + $30 = $330 in total. After the second month you get = 10 / 100 * $330 = $33 interest. After the second month you will have $330 + $33 = $363 in total. The answer is 363.
Question: Out of the 400 emails that Antonia received in her mail, 1/4 were spam emails, while 2/5 of the remaining emails were promotional messages. If the rest of the emails were important emails, calculate the total number of important emails in her inbox.
Answer: Out of the 400 emails, 1 / 4 * 400 = 100 emails were spam emails. The number of emails that were not spam emails is 400 - 100 = 300. 2 / 5 of the emails which were not spam were promotional emails, a total of 2 / 5 * 300 = 120 emails. If the rest of the emails were important emails, there were 300 - 120 = 180 important emails. The answer is 180.
Q: Tina saved $27 in June, $14 in July, and $21 in August. Then Tina spent $5 on books and $17 on new shoes. How much money does Tina have left?
A:
The total amount of money saved is $27 + $14 + $21 = $62. The total amount spent on books and new shoes is $5 + $17 = $22. Tina has $62 $22 = $40 left. The answer is 40.