⚡ Month End Offer is live - Get Flat 55% Off on All Courses • Grab it Now! Click Here 00:00:00 AM

    Question

    A boat goes 25 km in upstream in 5 hours and takes 4

    hours to complete a distance of 36 km in downstream. Find the speed of boat in still water.  
    A 6.2 km/hr Correct Answer Incorrect Answer
    B 4 km/hr Correct Answer Incorrect Answer
    C 12 km/hr Correct Answer Incorrect Answer
    D 7 km/hr Correct Answer Incorrect Answer
    E 9 km/hr Correct Answer Incorrect Answer

    Solution

    Speed of boat in still water = (D + U)/2 Upstream speed (U) = 25/5 = 5 km/hr Downstream speed (D) = 36/4 = 9 km/hr Speed of boat in still water = (5 + 9)/2 = 14/2 = 7 km/hr

    Practice Next
    ask-question