New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Parag starts chasing a Vipul, 6 hours after the Vipul

    starts running. Parag takes 7 hours to catch the Vipul. If the average speed of the Parag is 39 km/hr, find the average speed of the Vipul?
    A 10 km/hr Correct Answer Incorrect Answer
    B 20 km/hr Correct Answer Incorrect Answer
    C 9 km/hr Correct Answer Incorrect Answer
    D 21 km/hr Correct Answer Incorrect Answer
    E 12 km/hr Correct Answer Incorrect Answer

    Solution

    Parag catches up to Vipul in 7 hours at a speed of 39 km/hr. So, the distance Parag covers is 39×7 = 273 km. Vipul was running for 13 hours total (6 hours before Parag started + 7 hours while being chased). Since Vipul also covered 273 km, his average speed is (273km/13hr) = 21 km/hr Vipul's average speed is 21 km/hr.

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