The ticket price and preferential measures of a tourist attraction are as follows:

analysis: according to "if two tour groups are combined to purchase tickets, two tour groups only need 88 yuan", the total number of people in two classes is 88÷8=11. Suppose one tour group has X people and the other has (11-x) people, list the equations and solve them.

Solution.

suppose one tour group has x people, and the other has (11-x) people, which means:

12x+1x (11-x) = 1166,

12x+11-1x=1166,

2x=66.

11-x=11-33=77 (person);

A: There are 33 people and 77 people in these two groups respectively.