Given: Time taken by boat in downstream = 9 hours Time taken by boat in upstream = 16 hours Formula Used: Distance = Speed × Time Calculation: Let the Speed of Boat be x Km/h and Stream be y Km/h We know, Distance = Speed × Time According to the question, (x−y)×16=(x+y)×9 ⇒
x
y
=
25
7
Suppose x = 25k and y = 7k Distance = (x - y) × 16 = 288k ∴ Time required =