rachel has been studying for her math test. in 15 minutes she finished 7 1/2 questions. how many questions does she answer in one minute?
2 questions
2 minutes
1/2 of a question
1/2 of a minute
To find out how many questions Rachel answers in one minute, we can divide the number of questions she answered (7 1/2) by the number of minutes it took her to finish (15).
First, let's convert the mixed fraction 7 1/2 to an improper fraction:
7 1/2 = (7 * 2 + 1)/2 = 15/2
Now, let's divide 15/2 by 15 to find out how many questions Rachel answers in one minute:
(15/2) / 15 = (15/2) * (1/15) = 15/30 = 1/2
Therefore, Rachel answers 1/2 of a question in one minute.
To find out how many questions Rachel answers in one minute, divide the number of questions she answered in 15 minutes (which is 7 1/2) by the number of minutes (15).
7 1/2 questions รท 15 minutes = 1/2 of a question per minute
Therefore, Rachel answers 1/2 of a question in one minute.
To find out how many questions Rachel answers in one minute, you can calculate the rate at which she answers questions by dividing the total number of questions she answered by the total time taken. In this case, Rachel answered 7 1/2 questions in 15 minutes.
To calculate the number of questions she answers in one minute, you can set up a proportion:
(7 1/2 questions) / (15 minutes) = (x questions) / (1 minute)
To solve for x, you can cross-multiply:
(7 1/2) * (1 minute) = (15 minutes) * (x questions)
Now, let's simplify the equation:
7.5 minutes = 15x
Next, divide both sides of the equation by 15 to isolate x:
7.5 / 15 = x
Simplifying the division:
0.5 = x
Therefore, Rachel answers 0.5 (or 1/2) questions in one minute.