I can't solve this question, I'd be so glad if someone could help me solve out this question.

__Question__

Assume a 1 Amp/Hour battery is used on a cellular phone, and the cellular phone draws 35 mA in idle mode and 250 mA during the call. How long will the phone work if the user leaves the phone on continually and has one 3-mins call every day?????

How could you find the initial Amp of the battery??? and how long will the phoen work???? Thank you very much for your help.