human
Maryann spends seven times as long doing accounting as calling clients. If she worked 560 minutes today, how many minutes did she spend calling clients?
assistant
How many minutes does Maryann spend doing accounting and calling clients? ** Let a be the amount of time Maryann spends doing accounting and c be the amount of time she spends calling clients: We know that a + c = 560 and a = 7c.
How many minutes does Maryann spend doing accounting and calling clients? ** Substituting the second equation into the first equation, we get 7c + c = 560
How many minutes does Maryann spend doing accounting and calling clients? ** Combining like terms, we get 8c = 560
How many minutes does Maryann spend calling clients? ** Dividing both sides by 8, we get c = 70
#### 70