TWO NURSES AND A MAN

In the the church, there were two nursẹ One nurse was very good at Maths, the other was very good at logic. 
_One day, two nurses had to do some work in a place very far from their work. After finishing the work, they returned their church. When they were walking on the way back to the church they meet a mạn .The man seem to wanted thẹm .Very panic, two nurses started to rụn .Unfortunately, the man chased them. When they met a cross wạy, the nurse who was good at maths said that: " if he still chase us with this speed, he will catch us after 15 minutes morẹ .So, We should seperate each other. You should run through this way and I will run through that wạy .That means the man can only hurt one of us ". Another nurse agreed and they seperatẹ .The nurse who was good at maths return church safelỵ .She didn't see another nurse in church and she got worried.
_But after 5 minutes later, the nurse who was good at logic return church. This nurse said " when the man caught me, I pulled my skirt and the man took off his trouses " . " My God, what was happened to you ". The other ask.  " Nothing, as you know the man who was taking off his trousers could not run as fast as a woman who was pulling her skirt " answer the nurse good at logic.