Question

A boat goes some distance in upstream in 6 hours and covers the same distance in downstream in 4 hours. If the speed of stream is
3 km-​

Answer 1

Answer:

72 km

Step-by-step explanation:

Given :

Speed of stream=3km/hr

upstream time=6hrs

downstream time=4hrs

Let the distance between the two parts be x km

Down speed stream=x/4 km/hr

upstream speed= x/6km/hr

speed of stream=1/2(x/4-x/6)=

1/2(3x-2x)/12=x/24

Speed of stream=x/24=3x=72km

∴ Distance is 72km