Question: Charles is jogging while listening to his favorite album. He runs at 6 MPH when he's got music on and 4 MPH when he doesn't. His album is 40 minutes long. How many minutes will it take him to jog 6 miles?
Answer: Step-by-step reasoning process: He runs at .1 miles per minute because 6 / 60 = .1. While the album is playing he can run 4 miles because 40 x .1 = 4. He has to run 2 miles without the album because 6 - 4 = 2. Without music he runs 1 / 15 miles per minute because 4 / 60 = 1 / 15. He will run the remaining 2 miles in 30 minutes because 2 / (1 / 15) = 30. It will take him 70 minutes in total because 40 + 30 = 70.
So the answer is 70.

Question: Every 4 weeks, Helen hand washes her silk pillowcases. It takes 30 minutes to hand wash all of them. In 1 year, how much time does Helen spend hand washing her pillowcases?
Answer: Step-by-step reasoning process: She hand washes them every 4 weeks and there are 52 weeks in a year so she washes them 52 / 4 = 13 times per year. It takes her 30 minutes to hand wash the pillowcases and she does this 13 times per year for a total of 30 * 13 = 390 minutes per year.
So the answer is 390.

Question: Two friends, Hubert and Ian, are planning to have a pizza party. One box of pizza is worth $14, and a can of soda is worth $1.80. Hubert orders eight boxes of pizza and ten cans of soda. Ian buys ten boxes of pizza and fifteen cans of soda. How much do they spend in all?
Answer: Step-by-step reasoning process: The number of boxes of pizza is 8 + 10 = 18 boxes. The number of cans of soda is 10 + 15 = 25 cans. The eighteen boxes of pizza cost 18 x $14 = $252. The cost of 25 cans of soda is 25 x $1.80 = $45. Therefore, the total amount they spend is $252 + $45 = $297.
So the answer is 297.

Question: Betty bought 1 kg of oranges and 3 kg of apples. The total cost of oranges was $12. The apples were two times cheaper than the oranges. How much did Betty pay for 1 kg of apples?
Answer:
Step-by-step reasoning process: The cost of the apples was $12 / 2 = $6. When the cost of 3 kg of apples was $6, then the cost of 1 kg of apples was $6 / 3 kg = $2 / kg.
So the answer is 2.