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Katena32 [7]
3 years ago
7

a car with 5 tires (four road tires and a spare in the trunk) travelled 30000 km. All five tires we used equally. How many km of

wear are on each tire ?
Mathematics
2 answers:
kupik [55]3 years ago
6 0

because there are 5 tires available and only 4 tires are used at a time each tire travels 4/5 of the distance

 lets use 1000 km for example:

 1000/5 = 200 km

The first  200 km we use tires 1, 2, 3, 4
The second 200 km we use tires 1, 2, 3, 5
The third  200 km we use tires 1, 2, 5, 4
The fourth 200 km we use tires 1, 5, 3, 4
The fifth  200 km we use tires 5, 2, 3, 4

 breaking it into 5ths you can see each tire is used 4/5 of the time

so: 30000 x 4/5 = 24000 km on each tire

sineoko [7]3 years ago
4 0
30,000 / 5 = 6000  <== so each tire was used for 6000 km.
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