A car takes 2 hours to cover a distance of 120km. IF the speed is doubled. How much time will it take to cover the same distance?

Question

A car takes 2 hours to cover a distance of 120km. IF the speed is doubled. How much time will it take to cover the same distance?

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Jade 3 weeks 2021-10-01T19:38:56+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-10-01T19:40:36+00:00

    Answer:

    Car will take 1h

    Explanation:

    Given :

    • In 2h car complete 120km

    To Find :

    • How much time car will take if the speed is doubled

    Solution :

    Distance => 120km

    Time => 2 hours

    We know that

    \bigstar\boxed{\sf{Speed =\dfrac{Distance}{Time}}}

    \implies \dfrac{120}{2}

    \implies  60\sf{km/h}

    If the speed is doubled = 60 × 2

    =>120km/h

    \boxed{\sf{Time = Distance \div Speed}}

    = 120 \div 120

    = 1\sf{hour}

    ∴ The car will take 1h if the speed is doubled

    0
    2021-10-01T19:40:49+00:00

    Answer:

    1 hour

    Step-by-step explanation:

    Time taken=2 hours

    Distance travelled=120 km

    Speed=Distance travelled/Time taken

              = 120/2=60 kmphr

    If speed is doubled,

    Final Speed=2*Intial Speed

                       = 2*60

                       = 120kmphr

    Time taken=Distance travelled/Speed

                      = 120/120

                      = 1 hour

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