Question

Mary has already spent 8 minutes on the phone, and she expects to spend 1 more minute with every phone call she routes. In all, how many phone calls does Mary have to route to spend a total of 39 minutes on the phone?

Answer 1

Mary needs to route 31 more phone calls to spend a total of 39 minutes on the phone after already spending 8 minutes.

Step-by-step explanation:

The student asked how many phone calls Mary needs to route to spend a total of 39 minutes on the phone, given that she has already spent 8 minutes and will spend an additional 1 minute with every call she routes.

To solve the problem, we first subtract the initial 8 minutes from the total 39 minutes to find the time Mary will spend routing calls.

This gives us 39 minutes - 8 minutes = 31 minutes. Then, we divide the remaining time by the minutes spent on each call to find the number of calls: 31 minutes ÷ 1 minute per call = 31 calls.

Therefore, Mary needs to route 31 more phone calls to spend a total of 39 minutes on the phone.