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In a 1 km race A gives B startup of 5 se...

In a 1 km race A gives B startup of 5 seconds and still wins over B by 15 seconds. The ratio of speeds of A and B is 2 : 1. Find the time taken by A to finish 2.5 km race.

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In a 1 km race A gives B a startup of 5 second and still wins over B by 15 seconds. The ratio of speed of A and B is 2:1 Find the time taken by A to finish 2.5 km race.

In 2 km race A gives a startup of 300 m to B. Despite this, A wins the race by 400 m. Find the ratio of speed of A and B.

Knowledge Check

  • In a race of one kilometre, A gives B a start of 100 metres and still wins by 20 seconds. But if A gives B a start of 25 seconds, B wins by 50 metres. The time taken by A to run one kilometre is

    A
    17 seconds
    B
    `(500)/(29)` seconds
    C
    `(1200)/(29)` seconds
    D
    `(700)/(29)` seconds

  • In a 500 metres race, B gives A a start of 160 metres. The ratio of the speeds of A and B is 2 : 3. Who wins and by how much ?

    A
    `6 2/3` m
    B
    8 m
    C
    `8 1/3` m
    D
    `6 1/3` m

  • In a 400 metres race, A gives B a start of 5 seconds and beats him by 15 metres. In another race of 400 metres. A beats B by 7 1/7 seconds. Find their speeds-

    A
    `8 m/(sec), 6 m/(sec)`
    B
    `9 m/(sec), 6 m/(sec)`
    C
    `8 m/(sec), 7 m/(sec)`
    D
    None of these

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    In race of 1 km Sahara gives Birla a startup of 250 m still Sahara wins by 150 m. What is the ratio of speeds of Sahara and Birla?

    In a 100 m race, A runs at 6 km/hr. If A gives B a start of 8 m and still beats him by 9 seconds, what is the speed of B?

    In a race of 1 km A beats B by 40 m and 5 seconds. Find the time taken by A to run 1 km?

    In a km race A beats B by 35 metres or 7 seconds. Find A’s time over the course.

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