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?
Let's be accurate as possible and think first.
70
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.

Substituting the second equation into the first equation, we get 7c + c = 560.

Combining like terms, we get 8c = 560.

Dividing both sides by 8, we get c = 70.

.

Thus, the answer is 70