A lorry and a Lamborghini started travelling from Town F to Town G at the same time. After 5 hours, the Lamborghini reached Town G while the lorry covered only ⁷₉ of the journey. The speed of the Lamborghini was 26 km/h more than the speed of the lorry. Find the speed of the lorry.
Extra distance covered by the Lamborghini in 5 h
= 5 x 26
= 130 km

When the Lamborghini reached Town G:
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 = 130

1 u = 130 ÷ 2 = 65

Distance covered by the lorry when the Lamborghini reached Town G
= 7 u
= 7 x 65
= 455 km

Speed of the lorry
= 455 ÷ 5
= 91 km/h

Answer(s): 91 km/h