Question: Johnny has been playing guitar for a while now. He practices the same amount each day. As of 20 days ago he had half as much practice as he has currently. How many days will pass before Johnny has 3 times as much practice as he does currently?
Answer: Step-by-step reasoning process: If Johnny had half as much practice as he currently has as of 20 days ago, this means he has 20 * 2 = 40 days worth of practice currently. Therefore, to have three times as much practice as he currently has, he'd need to practice for 40 * 3 = 120 days. Since he's already practiced for 40 days, this means he needs to practice or 120 - 40 = 80 more days.
So the answer is 80.

Question: A woman is trying to decide whether it will be quicker to take an airplane or drive herself to a job interview. If she drives herself, the trip will take her 3 hours and 15 minutes. If she takes an airplane, she will first need to drive 10 minutes to the airport, and then wait 20 minutes to board the plane. After that, she will be on the airplane for one-third of the time it would have taken her to drive herself before landing in the destination city. Finally, it will take her an additional 10 minutes to get off the airplane and arrive at her interview site after the plane lands. Given this information, how many minutes faster is it for her to take the airplane?
Answer: Step-by-step reasoning process: First, we must convert the driving time of 3 hours and 15 minutes to minutes. Since there are 60 minutes in an hour, driving takes a total of 3 * 60 + 15 = 195 minutes. Next, the woman will be on the airplane for one - third of 195 minutes, or 195 / 3 = 65 minutes. Therefore, in total, the airplane trip will take the woman 10 + 20 + 65 + 10 = 105 minutes. Thus, the airplane trip is 195 - 105 = 90 minutes faster than driving herself to the interview.
So the answer is 90.

Question: A rectangle has a length of 3 inches and a width of 6 inches. A square has a width of 5 inches. What is the difference in area between the two shapes?
Answer: Step-by-step reasoning process: The area of the rectangle is 3 x 6 = 18 sq in. The area of the square is 5 x 5 = 25 sq in. The difference is 25 - 18 = 7 sq in.
So the answer is 7.

Question: Mr. Smith takes his wife, his parents, and his 3 children to a seafood buffet. The price for the adult buffet is $30. The price for the children's buffet is $15. Senior citizens get a 10% discount. How much does Mr. Smith spend on the buffet for his entire family?
Answer:
Step-by-step reasoning process: The buffet cost for Mr. Smith and his wife is $30 x 2 = $60. The buffet cost for his children is $15 x 3 = $45. The buffet cost for 1 senior citizen is $30 x 90% = $27. B. uffet cost for the grandparents is $27 x 2 = $54. Buffet cost for the entire family is $60 + $45 + $54 = $159.
So the answer is 159.