A van and a Lamborghini started travelling from Town P to Town Q at the same time. After 6 hours, the Lamborghini reached Town Q while the van covered only ⁷₉ of the journey. The speed of the Lamborghini was 16 km/h more than the speed of the van. Find the speed of the van.
Extra distance covered by the Lamborghini in 6 h
= 6 x 16
= 96 km

When the Lamborghini reached Town Q:
Distance covered by the Lamborghini = 9 u
Distance covered by the van = 7 u

Extra distance covered by the Lamborghini 
= 9 u - 7 u
= 2 u

2 u = 96

1 u = 96 ÷ 2 = 48

Distance covered by the van when the Lamborghini reached Town Q
= 7 u
= 7 x 48
= 336 km

Speed of the van
= 336 ÷ 6
= 56 km/h

Answer(s): 56 km/h