Question

a motorboat whose speed is 18 km per hour in still water takes 1 hour more to go 24 km upstream then to return down to the same spot find the speed of the stream

Answer 1

, speed of the boat in still water = 18 km/hr.

Let the speed of the stream be x km/hr.

Speed of the boat upstream = Speed of boat in still water – Speed of the stream

∴ Speed of the boat upstream = ( 18 – x ) km/hr

Speed of the boat downstream = Speed of boat in still water + Speed of the stream

∴ Speed of the boat downstream = ( 18 + x ) km/hr

Time of upstream journey = Time for downstream journey + 1 hr





hope it's helpful

Answer 2

Refers to attachment ♡~