SOLUTION: a man takes a 500km trip in his car.he rotates his tyres(four on the car and one spare)so that in the end of the trip each tyre has been used for the same number of kilometres.how

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Question 900965: a man takes a 500km trip in his car.he rotates his tyres(four on the car and one spare)so that in the end of the trip each tyre has been used for the same number of kilometres.how many kilometres did each tyre cover?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
He would start with this pattern:
1 2
3 4 - S
keeps them on until +x+ km driven
2 3
4 S - 1
on car until +2x+ km
3 4
S 1 - 2
on car until +3x+ km
4 S
1 2 - 3
on car until +4x+ km
S 1
2 3 - 4
on car until +5x+ km
----------------------
+5x+=+500
+x+=+100+
Each tyre covers 100 km