Question

A double-decker coach traveling 180 km uses 80 litres of fuel. If there are 67 passengers on the bus (including the driver) what is the kWh/100p-km for the journey?

(Note: fuel has an energy content of 11 kWh/L)

Answer 1

$\newline \text{Energy of fuel = 11 kWh/L}\newline \text{So total energy consumed during the journey = total fuel $$\times$ energy pel liter}$

$=80 \ L\times \frac{11 \ kWh}{L}=880 \ kWh$

$\text{Energy consumed per km}=\frac{\text{total energy consumed}}{\text{total distance covered}}$

$=\frac{880 \ kWh}{180 \ km}=4.89 \ \frac{kWh}{km}$

$\text{Energy consumed per person per km}=\frac{\text{energy consumed per km}}{\text{total number of passengers}}$

$=\frac{4.89 \ kWh/km}{67 \ p}$

$=0.073 \ \frac{kWh}{p-km}$

$\newline \text{Energy consumed per 100 person per km}=\frac{\text{energy consumed per km}}{\text{total number of passengers}}\times 100$

$=0.073 \ \frac{kWh}{p-km}\times 100$

$=7.3 \ \frac{kWh}{100p-km}$