Then 6 * (12+y) = X.

10*( 12-Y)=X

X=90 Y=3

2. Solution: Suppose there are X people in the company, and the travel expenses of both parties are the same.

200*0.75*X=200*0.8*(X- 1)

X= 16

When the number of people in the unit is more than 10 and less than 16, it is more economical to choose B travel agency. When the number of employees is more than 16 and less than 25, the cost of choosing a good travel agency is relatively low. When it is equal to 16 people, the travel agency fees of both parties are the same.