A car travels 270 km on 30 l of petrol.

  1. (a)

    How many kilometres can the car travel on 1 l of petrol?

    Ans: (a)___ km

  2. (b)

    How much petrol is needed for the car to travel 180 km?

    Ans: (b)___ l

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Worked solution

23(a)

1. Calculate the distance travelled per litre of petrol

270÷30=9270 \div 30 = 9

Answer

99

23(b)

1. Find the distance travelled per litre of petrol (from part a)

Distance per litre = 27030=9\frac{270}{30} = 9 km/l

2. Calculate the petrol needed for 180 km

Petrol needed = 1809=20\frac{180}{9} = 20 l

Answer

2020

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