Numerical - Velocity of river water for specified boat velocity

Q.  A boat sails across a river with a velocity of 10 km/hr. If resultant boat velocity is 14 km/hr, then what is the velocity of river water?
- Published on 18 Sep 15

a. 17.20 km/hr
b. 10 km/hr
c. 9.79 km/hr
d. 4.88 km/hr

ANSWER: 9.79 km/hr

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    Discussion

  • Sravanthi   -Posted on 15 Dec 15
    Solution:



    Velocity of river = √ ((14)2 - (10)2)

    = 9.79 km/hr

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