A van and a Lamborghini started travelling from Town G to Town H at the same time. After 3 hours, the Lamborghini reached Town H while the van covered only ⁷₉ of the journey. The speed of the van was 26 km/h less than the speed of the Lamborghini. Find the speed of the Lamborghini.
Extra distance covered by the Lamborghini in 3 h
= 3 x 26
= 78 km

When the Lamborghini reached Town H:
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 = 78

1 u = 78 ÷ 2 = 39

Distance covered by the Lamborghini when it reached Town H
= 9 u
= 9 x 39
= 351 km

Speed of the Lamborghini
= 351 ÷ 3
= 117 km/h

Answer(s): 117 km/h