Some people go hiking on Sunday and return to their destination along the same road. It took 10 hours to go back and forth. It is understood that he walked 8 kilometers per hour when he went there and

Some people go hiking on Sunday and return to their destination along the same road. It took 10 hours to go back and forth. It is understood that he walked 8 kilometers per hour when he went there and 1 kilometer when he came back. It took x hours to set up, y hours to come back, and the total distance to go back and forth is z kilometers, so:

1、8x=6y

2、x+y= 10

3、Z=8x+6y

X=3y/4 can be obtained from the equation 1, and then x=30/7 and y=40/7 can be obtained by substituting it into equation 2.

Substituting X and Y into Equation 3, we can get Z=30/7×8+40/7×6=68.57 km.

This is junior high school math, right? I haven't written such a basic company for years, and I almost forgot all about it.