Question

a truck requires 19 litres of diesel to travel 429 how would it travel on 60 litres​

Answer 1

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$truck \: travel \: in \: 39l = 423km$

$find \: the \: distance \: covered \: in \: \\ 1l = \frac{429}{39} = 11km$

$so \: in \: 60l \: truck \: would \: travel \\ = 60 \times 11 = 660km$