Waec Model Questions Vol1 2019 Geography Question 26

An transport company must choose between two possible routes from City X to City Y. Route 1 is 120 km long. The first 60 km can be travelled at 80 km h⁻¹, after which the vehicle must stop for 15 min for loading. The remaining 60 km are on a poorer road and can be travelled at 60 km h⁻¹. On the first 60 km the vehicle's fuel efficiency is 10 km L⁻¹, and on the second 60 km it is 8 km L⁻¹. Route 2 is 150 km long, travelled at a constant speed of 70 km h⁻¹. The vehicle's fuel efficiency on this mixed terrain is 9 km L⁻¹. In addition, a toll adds a fixed delay of 5 min. Fuel costs N150 per litre and the company values travel time at N200 per hour. Which route gives the lower total cost (fuel cost plus time cost)?