Trial operation: Beijing to Tianjin: 36 (minutes),

Tianjin to Beijing: 30 (minutes),

Let the speed from Beijing to Tianjin be X, then the speed from Tianjin to Beijing is X+40.

Since the distance from Beijing to Tianjin is fixed, we can list the following equations:

36*X=30*(X+40) gives X=200.

2.( 1) Analysis: Let type I and type II sold before the event be X and Y respectively.

Then, the sales of Type I and Type II after the event are (1+30%)*X and (1+25%)*Y respectively.

The formula is: X+Y=960.

( 1+30%)* X+( 1+25%)* Y = 1228

Solution: X=560 Y=400

(2) Analysis: According to (1), 560 sets of Type I and 400 sets of Type II were sold before the activity (here, special attention should be paid to the questions asked before the activity 1 and the questions asked after the activity 2).

Sold 560 * (1+30%) = 728,400 * (1+25%) = 500 sets.

So the government subsidy: 728 * 2500 *13%+500 * 2000 *13% = 366600.

The answer to the second question upstairs is wrong. Pay attention to the problem. You can't directly substitute (1) data into that equation.