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solve the ff Problems involving variations

1) A school service van travel a distance of 210 km on 30 liters of gasoline. How far can it yo on a full tank containing 81 liters? ​

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Variation to be used;

  • Direct Variation

Let,

g = gasoline

D = Distance

C = Constant of Variation

D = cg

[tex]d \: = cg \\ \frac{210}{30} = \frac{30c}{30} \\ 7 = k \\ \\ d = cg \\ d = 7g \\ \\ d = 7(81) \\ d = 567[/tex]

The distance covered by the school service is 567 km

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