The group ticket fare of a tourist attraction is as follows: number of ticket buyers1~ 5051~100100.

Solution (1) Suppose there are 50 people in group B, because there are less than 50 people in group A..

Therefore, it can be concluded that the amount of money required for Party A and Party B to purchase tickets respectively is less than 3,000.

Also, if tickets are purchased separately, the ticket fee payable by the two tour groups is 3200 yuan.

∴ It can be concluded that there are more than 50 people in Group B;

(2) Let the number of group A be X and the number of group B be Y. From the meaning of the question:

① When the total number of Party A and Party B is 5 1 ~ 100,

30x+25y=3200

25(x+y)=2400

Solution: x= 160 (it doesn't matter),

② When the total number of Party A and Party B exceeds 100,

30x+25y=3200

20(x+y)=2400

Solution:

x=40

y=80

A: There are 40 and 80 tour groups A and B respectively.