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.

Anna ate 4 apples on Tuesday. On Wednesday, she ate double the apples she ate on Tuesday. On Thursday, Anna ate half the apples she ate on Tuesday. How many apples has Anna eaten by the end of these three days? Give the rationale and then the answer.
Let's think step by step. On Tuesday, Anna ate 4 apples. On Wednesday, she ate 4 x 2 = 8 apples. On Thursday, she ate 4 / 2 = 2 apples. In total, Anna ate 4 + 8 + 2 = 14 apples.. The answer is: 14.

Three years from now, Tully will be twice as old as Kate. How old was Tully a year ago if Kate is now 29 years old? Give the rationale and then the answer.
Let's think step by step. Three years from now, Kate will be 29 years + 3 years = 32 years old. So by that time, Tully will be 32 years x 2 = 64 years old. This means, Tully is 64 years - 3 years = 61 years old now. Therefore, Tully was 61 years - 1 year = 60 years old last year.. The answer is: 60.