A lorry and a Lamborghini started travelling from Town T to Town U at the same time. After 6 hours, the Lamborghini reached Town U while the lorry covered only ⁷₉ of the journey. The speed of the lorry was 26 km/h less than the speed of the Lamborghini. Find the speed of the Lamborghini.
Extra distance covered by the Lamborghini in 6 h
= 6 x 26
= 156 km

When the Lamborghini reached Town U:
Distance covered by the Lamborghini = 9 u
Distance covered by the lorry = 7 u

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

2 u = 156

1 u = 156 ÷ 2 = 78

Distance covered by the Lamborghini when it reached Town U
= 9 u
= 9 x 78
= 702 km

Speed of the Lamborghini
= 702 ÷ 6
= 117 km/h

Answer(s): 117 km/h