2023 AISS EM S1 EOY P1 Q14

Lynn left her house at \({8.20\ \mathrm{am}}\) and drove from Town \({A}\) to \({B}\).

Along the way, she stopped at a café for \({15}\) minutes to buy coffee.

She drove off to Town \({B}\) from the café at a speed of \({60\ \mathrm{km/h}}\).

The ratio of the times she spent on the first part of her journey, buying coffee and the final part of the journey was \({2:1:3}\).

1. Convert \({60\ \mathrm{km/h}}\) into \({\mathrm{m/s}}\).[2]
2. What time did Lynn reach Town \({B}\)?[2]
3. If the distance between Town \({A}\) and the café is \({34\ \mathrm{km}}\), find the
   average speed of the whole journey in kilometres per hour.[3]