3×62+3x=500-89

3x=225

x=75

A: .......

2. Solution: Set the local train to meet after X hours.

82x+ 106x= 1500-90

190x= 14 10

14 1

x=—

19

answer ........

3. Solution: Set the truck to travel x kilometers per hour.

4×95+(4- 1.2)x=590

380+2.8x=590

2.8x=2 10

x=75

A: ......

4. 1 Solution: Let Xiaoya walk from home to school for x minutes.

70x+75x+300= 1 170

145x=870

x=6

A: ......

4.2: 75x+300 = 750m

A: ......

5. Solution: Let's assume that Uncle Li rides a bicycle for an average of X kilometers per minute.

15x+45×0.07=7.95

15x=4.8

x=0.32

A: ......

6. Solution: Suppose Dad can catch up with Xiao Pang in X minutes.

72(8+x)= 264 times

192x=576

x=3

A: ......

7. Solution: Set a good horse and catch up with the bad horse in X days.

( 12+x)×75= 120x

45x=900

x=20

Answer. . . . . .

8. Solution: Set the second machine to drive x kilometers per hour on average.

5.8x=6×870

5.8x=5220

x=900

A: Yes. . . . . .

9. Solution: Suppose they meet on the road after X minutes.

62(20+x)+90x=2000

152x=760

x=5

A: Yes. . . . . .

10. solution: suppose we meet a ship after x hours.

37x+35(x-2)=758

72x=828

x= 1 1.5

A: Yes. . . . . .