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The second volume of the first day of junior high school asks a mathematical binary question: the ticket price of a scenic spot group to buy park tickets is as follows
(1) Assume that the number of group B is less than 50, and the number of groups A and B is less than 100.

∵ 100× 13= 1300< 1392,

∴ The number of people in Group B is not less than 50 and not more than100;

(2) Form two tour groups, A and B, with X and Y people respectively.

Then13x+11y =1392.

9(x+y)= 1080。

Solution: x=36

y=84。

Or13x+11y =1392.

1 1(x+y)= 1080。

The solution is x= 156.

Y=-636/ 1 1 (irrelevant, omitted)

A: There are 36 and 84 tour groups A and B respectively.