Multiple Choice Questions on In a race on a circular track the three athletes complete one round in 27 minutes 45 minutes and 63 ........... for Civil Services Exam (CSAT) Preparation

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Multiple Choice Questions

In a race on a circular track the three athletes complete one round in 27 minutes 45 minutes and 63 ...........

Math and Mental Ability LCM, HCF
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    In a race on a circular track, the three athletes complete one round in 27 minutes, 45 minutes and 63 minutes respectively. Find the time after which they meet again at the starting point, since the time they started.

    8 hours

    Incorrect Answer

    654 minuts

    Incorrect Answer

    945 minuts

    Correct Answer

    555 minuts

    Incorrect Answer
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    Explanation:

    We need the next instance that means the LCM of times of all 3 athletes.
    ∴ LCM = 9 x 3 x 5 x 7 = 945 = They meet after 945 minutes

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