# Aircraft

The aircraft has in a fuel tank 68 hl of aviation fuel and flight consumes 3.6 liters of fuel. Identify the function, which expresses the dependence of the volume of fuel in tank on the track distance plane flew by. How many hectolites of fuel is still in the tank at a distance 159 km from the start?

Correct result:

V =  62.28 hl

#### Solution:

$V(x) = 68 - 3.6/100\cdot x = 68 - 0.036 \cdot x \ \\ V(159) = 68 - 0.036 \cdot 159 = 62.28 \ \text{hl}$

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