EM-532

Forming equations from word problems

E Math · Secondary 3 · Medium · Forming equations from word problems

Car A travels

x

km for every litre of petrol used. Car B travels 4 km more than Car A for every litre of petrol. For a 360 km journey, Car A uses 6 litres more petrol than Car B. Which equation in

x

represents this information?

$\dfrac{360}{x}=\dfrac{360}{x+4}+6$
$\dfrac{360}{x+4}=\dfrac{360}{x}+6$
$360x=360(x+4)+6$
$\dfrac{360}{x}-\dfrac{360}{x+4}=\dfrac{6}{x}$

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