Question

Q if a boat goes 7 km upstream in 42 minutes and the speed of the stream is 3 kmph, then the speed of the boat in still water is?

Answer 1

Helllo.... ☺


Rate upstream :-

= (7➗42)✖60 kmh
= 10 kmph.... 

Speed of stream
= 3 kmph.....
 
speed in still water is x km➗hr 

speed upstream
= (x ➖3) km➗hr. 

x➖3 = 10 or x = 13


thank you ☺