Waec Model Questions Vol1 2020 Geography Question 12
Practice objective / multiple choice question 12 from the 2020 Waec Model Questions Vol1 Geography examination.
A delivery truck must travel a 100 km route that consists of two consecutive sections. The first section is 30 km long and climbs a 5% gradient; because of safety regulations the truck cannot exceed 40 km/h on this uphill section. The second section is a level road of 70 km. Fuel consumption on level ground is given by the relation F(v) = 0.2 + 0.005 v² litres per kilometre, where v is the speed in km/h. On a 5% gradient an additional 0.1 L/km is consumed. The driver wishes to minimise the total fuel used while ensuring that the average speed for the whole journey is at least 60 km/h. What speed (in km/h, to the nearest whole number) should the driver maintain on the level section?
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About This Question
This is Waec Model Questions Vol1 2020 Geography Question 12. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Geography examination.
Difficulty level: Hard .
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