manufacturer records the speed, fuel used, and the distance travelled for one car in this table.
Speed of car
(km per hour) Fuel used
(litres) Distance
(km)
60 14 210
70 10 160
80 20 240
90 22 220
100 8 72
At what speed should the car be driven to travel the greatest distance with 1 litre of fuel?
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Answer:
100 km/hr.
in liter petrol
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