Seventh grade math problem: Students set off from school for a bicycle trip. They pass through a flat road at a speed of 8 kilometers per hour.

Then reach the destination at an uphill speed of 4 kil

Seventh grade math problem: Students set off from school for a bicycle trip. They pass through a flat road at a speed of 8 kilometers per hour.

Then reach the destination at an uphill speed of 4 kilometers per hour.

Explanation: Method 1, assuming that the uphill distance is /60-x/12)

Obtain, x=3,

Therefore, the distance from the school to the tourist destination is 8 (1.5-3/4) + 3 = 9 thousand Meters

Method 2: Suppose the distance traveled on flat road is -x/9)

Obtain, x=6

Therefore, the distance from the school to the tourist destination is 4 (1.5-6/8) + 6 = 9 kilometers

p>

Method 3, assuming that the time to walk on a flat road is p> Obtain, x=0.75

1.5-0,75=0.75 hours

Therefore, the distance from the school to the tourist destination is 0.75x (8+4) = 9 kilometers

Method 4, assuming that the time to walk on a flat road when returning is X hours, then

9x/8+12(55/60-x)/4=1.5

Obtain, x=2/3

Therefore, the distance from the school to the tourist destination is 2/3x9+12x(55/60-2/3)=9 kilometers