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Convertible Cal replaces a tire after exactly 24 000 km of wear. What is the fewest number of tires that he will need in order to drive 78000 km? 

(hint: It is not 12!!!)

 Mar 3, 2019
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The answer is

 

4* ceiling [ 78000/24000]  =     16 tires

 

cool cool cool

 Mar 3, 2019

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