Tina decides to fill a jar with coins. In the first hour she puts in 20 coins. During the next two hours she puts in 30 coins each time. During the fourth hour she puts in 40 coins. During the fifth hour her mother asks to borrow some money so she takes 20 coins out. How many coins are left after the fifth hour?
Let's think: There are 20 coins during the first hour. 30 coins are added during the second and third hours and 40 coins are added during the fourth hour. By the fourth hour there are 20 + 30 + 30 + 40 = 120 coins. The number of coins after giving 20 to her mother is 120 - 20 = 100.. The answer is: 100.

James does chores around the class. There are 3 bedrooms, 1 living room, and 2 bathrooms to clean. The bedrooms each take 20 minutes to clean. The living room takes as long as the 3 bedrooms combined. The bathroom takes twice as long as the living room. He also cleans the outside which takes twice as long as cleaning the house. He splits the chores with his 2 siblings who are just as fast as him. How long, in hours, does he work?
Let's think: It takes 3 * 20 = 60 minutes to clean the living room. So it is 60 / 60 = 1 hour. The bathroom takes 1 * 2 = 2 hours. So all together the inside takes 1 + 1 + 2 = 4 hours. The outside takes 4 * 2 = 8 hours. So the chores take 4 + 8 = 12 hours. He splits it 1 + 2 = 3 ways. So he works 12 / 3 = 4 hours.. The answer is: 4.

Cara has 60 marbles in a bag. 20 of them are yellow, half as many are green, and the remaining marbles are equally divided between red and blue. If Cara picks a marble at random, what are the odds it's blue (expressed as a percentage)?
Let's think: First find the number of green marbles: 20 yellow marbles / 2 = 10 green marbles. Then find how many marbles are either red or blue: 60 marbles - 20 yellow marbles - 10 green marbles = 30 marbles. Divide this number in half to find how many marbles are blue: 30 marbles / 2 = 15 blue marbles. Finally, divide the number of blue marbles by the total number of marbles and multiply by 100 to find the percentage chance of getting a blue marble: 15 marbles / 60 marbles * 100 = 25%.. The answer is: 25.

A professional company is hiring for a new position. They have two qualified applicants. The first applicant will accept a salary of $42000 and make the company $93000 in the first year, but needs 3 months of additional training that costs $1200 a month. The second applicant does not need training and will make the company $92000 in the first year, but is requesting a salary of $45000 and a hiring bonus of 1% of his salary. Less the amount it will cost to pay for each candidate, how many more dollars will one candidate make the company than the other in the first year?
Let's think:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The first candidate’s training will cost 1200 * 3 = $3600. That candidate will make the company 93000 - 42000 - 3600 = $47400 in the first year. The second candidate’s bonus will cost 45000 * 1 / 100 = $450. That candidate will make the company 92000 - 45000 - 450 = $46550 in the first year. Thus, the first candidate will make the company 47400 - 46550 = $850 more in the first year.. The answer is: 850.