A van and a Lamborghini started travelling from Town N to Town P at the same time. After 4 hours, the Lamborghini reached Town P 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 4 h
= 4 x 16
= 64 km

When the Lamborghini reached Town P:
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 = 64

1 u = 64 ÷ 2 = 32

Distance covered by the van when the Lamborghini reached Town P
= 7 u
= 7 x 32
= 224 km

Speed of the van
= 224 ÷ 4
= 56 km/h

Answer(s): 56 km/h