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A truck travelling at 80 kilometres per hour uses 40% more diesel to travel a certain distance than it does when it travels at the speed of 60 kilometres per hour. If the truck has a mileage of 19.6 km/ litre of diesel at 60 kilometres per hour, what distance (in kilometres) can the truck travel on 15 litres of diesel at a speed of 80 kilometres per hour?
    Correct answer is '210'. Can you explain this answer?
    Verified Answer
    A truck travelling at 80 kilometres per hour uses 40% more diesel to t...
    Mileage of the truck is 19.6 km/litre when travelling at 60km/hr.
    Since the truck shall consume 40% more diesel when travelling at 80km/hr, it effectively has a mileage of (19.6/1.4) = 14km/litre when travelling at a speed of 80km/hr.
    Hence with 15 litres of diesel, the truck can travel for 1415 = 210 kms, when travelling at a speed of 80 km/hr.
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    A truck travelling at 80 kilometres per hour uses 40% more diesel to t...
    Solution:

    Given that the truck has a mileage of 19.6 km/litre of diesel at 60 km/hr speed.

    Let the distance travelled by the truck be ‘d’ km.

    Let the diesel used by the truck be ‘x’ litres at a speed of 60 km/hr.

    Then, the diesel used by the truck at 80 km/hr speed = 1.4x litres (since it uses 40% more diesel).

    We know that, mileage = distance travelled / diesel used

    At 60 km/hr speed, mileage = 19.6 km/litre

    Therefore, x = d / 19.6

    At 80 km/hr speed, mileage = d / 1.4x

    = d / (1.4 × d / 19.6)

    = 19.6 / 1.4

    = 14 km/litre

    Let the distance travelled by the truck on 15 litres of diesel at a speed of 80 km/hr be ‘D’ km.

    Then, D / 15 = 14

    D = 210 km

    Hence, the truck can travel a distance of 210 km on 15 litres of diesel at a speed of 80 km/hr.
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    A truck travelling at 80 kilometres per hour uses 40% more diesel to travel a certain distance than it does when it travels at the speed of 60 kilometres per hour. If the truck has a mileage of 19.6 km/ litre of diesel at 60 kilometres per hour, what distance (in kilometres) can the truck travel on 15 litres of diesel at a speed of 80 kilometres per hour?Correct answer is '210'. Can you explain this answer?
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    A truck travelling at 80 kilometres per hour uses 40% more diesel to travel a certain distance than it does when it travels at the speed of 60 kilometres per hour. If the truck has a mileage of 19.6 km/ litre of diesel at 60 kilometres per hour, what distance (in kilometres) can the truck travel on 15 litres of diesel at a speed of 80 kilometres per hour?Correct answer is '210'. Can you explain this answer? for CAT 2024 is part of CAT preparation. The Question and answers have been prepared according to the CAT exam syllabus. Information about A truck travelling at 80 kilometres per hour uses 40% more diesel to travel a certain distance than it does when it travels at the speed of 60 kilometres per hour. If the truck has a mileage of 19.6 km/ litre of diesel at 60 kilometres per hour, what distance (in kilometres) can the truck travel on 15 litres of diesel at a speed of 80 kilometres per hour?Correct answer is '210'. Can you explain this answer? covers all topics & solutions for CAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A truck travelling at 80 kilometres per hour uses 40% more diesel to travel a certain distance than it does when it travels at the speed of 60 kilometres per hour. If the truck has a mileage of 19.6 km/ litre of diesel at 60 kilometres per hour, what distance (in kilometres) can the truck travel on 15 litres of diesel at a speed of 80 kilometres per hour?Correct answer is '210'. Can you explain this answer?.
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