45- 1 1=34 people, 34 people donated100-1= 89 yuan,

Assuming that the remaining 34 people donated to 5 yuan, then some of them donated to 2 yuan:

(34×5-89)÷(5-2),

=8 1÷3,

=27 (person),

So the number of people donated to 5 yuan is: 34-27=7 (people),

A: Seven people donated to 5 yuan and 27 to 2 yuan.