20% of the job candidates at a temp agency have experience with Excel. 70% of the candidates are only willing to work day shifts. If a manager picks a candidate at random, what are the odds they know Excel and are willing to work nights? Give the rationale and then the answer.
Let's think step by step. First find the percentage of candidates who are willing to work nights: 100% - 70% = 30%. Then multiply that percentage by the percentage who know Excel to find the percentage who meet both qualifications: 30% * 20% = 6%.. The answer is: 6.

Cortney is downloading some files to her computer. Her internet speed is 2 megabits per minute. If she can download the files one at a time and the files she is downloading have the size of 80 megabits, 90 megabits, and 70 megabits. How many hours will it take for her to download all of it? Give the rationale and then the answer.
Let's think step by step. The first file will take 80 / 2 = 40 minutes to download. The second file will take 90 / 2 = 45 minutes to download. And the third file will take 70 / 2 = 35 minutes to download. So, it will take 40 + 45 + 35 = 120 minutes for all the files to download. Therefore, the total hours she will have to spend to download all the files is 120 / 60 = 2 hours.. The answer is: 2.

It took Alice three months to save up to buy new shoes. If she saved 10 dollars the first month and 30 more each month, how much did she have saved by the end of the third month? Give the rationale and then the answer.
Let's think step by step. The first month she saved 10 dollars. By the second month, she had 10 + 30 = 40 dollars saved. By the third month, she had 40 + 30 = 70 dollars saved.. The answer is: 70.