Yoyo swims 26 km downstream in same time as 14 km upstream. What is his speed in still water if speed of stream is 3 km/hr?

10 km/hr

Speed of stream i.e. y = 3 km/hr

Speed of boat in still water i.e. x = ?

According to the question:

\(\frac{26 }{\text{x + 3} }\) = \(\frac{14 }{\text{x - 3} }\)

26 ( x - 3) = 14 ( x + 3)

13 ( x - 3) = 7 ( x + 3)

13 x - 39 = 7 x + 21

6 x = 60

x = 10 km/hr