The energy used in a 100 kilometres car trip is about 15 kWh. Assuming that the energy
content of the fuel is 10 kWh/litre and the efficiency of the engine is 33 %, how many litres of
fuel are needed for a 100 kilometres car trip? Choose the best alternative.
O 5 litres
O 15 litres
O 7.5 litres
O 10 litres