Train and car

The train and the car started at a constant speed to journey. When the train travels 87 km, the car travels 97 km. How many km travels the train when the car travels 87 km?

Correct answer:

x =  78.03 km

Step-by-step explanation:

$x=87\cdot {\displaystyle \frac{87}{97}}={\displaystyle \frac{7569}{97}}=78.03\text{ km}$

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