2023 ACSBR EM S1 EOY P2 Q6

A bus travels at a speed of \({15\ \mathrm{m/s}}\) from Town \({X}\) to Town \({Y}\). Towns \({X}\) and \({Y}\) are \({48\ \mathrm{km}}\) apart.

1. Change \({15\ \mathrm{m/s}}\) into \({\mathrm{km/h}}\).[1]
2. Calculate the time taken for the bus to travel from Town \({X}\) to Town \({Y}\).
   Give your answer in minutes and seconds.[2]
3. The bus continued to travel \({37\ \mathrm{km}}\) from Town \({Y}\) to Town \({Z}\) in \({39}\) minutes and \({40}\) seconds. Calculate the average speed for the whole journey from Town \({X}\) to Town \({Z}\).Give your answer in kilometres per hour.[3]