Octane value

I loaded 10L 95 octane gasoline and 5L 100 octane gasoline. What is the resulting octane value of the gasoline in the tank?

Correct answer:

o =  96.7

Step-by-step explanation:

$o={\displaystyle \frac{10\cdot 95+5\cdot 100}{10+5}}=96.7$

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