A van and a Lamborghini started travelling from Town K to Town L at the same time. After 2 hours, the Lamborghini reached Town L while the van covered only ⁷₁₀ of the journey. The speed of the Lamborghini was 27 km/h more than the speed of the van. Find the speed of the van.
Extra distance covered by the Lamborghini in 2 h
= 2 x 27
= 54 km

When the Lamborghini reached Town L:
Distance covered by the Lamborghini = 10 u
Distance covered by the van = 7 u

Extra distance covered by the Lamborghini 
= 10 u - 7 u
= 3 u

3 u = 54

1 u = 54 ÷ 3 = 18

Distance covered by the van when the Lamborghini reached Town L
= 7 u
= 7 x 18
= 126 km

Speed of the van
= 126 ÷ 2
= 63 km/h

Answer(s): 63 km/h