1.

The motor boat whose speed is 18km/h in still water takes 1 hour more to go.24 upstream than to return to the same point . find the speed of the streamplease answer me......​

Answer»

Answer:

6km/hr.

Step-by-step EXPLANATION:

b=18km/hr

to FIND s.

u.s=b-s=18-s

d.s=b+s=18+s

let. DISTANCE be x.

time taken u.s=x/18-s

time taken d.s=x/18+s

distance is given x=24km.

24/(18-s)-24/(18+s)=1

432+24s-432+24s=324-s square

s square+48s-324=0

s=6km/hr use SREEDHAR acharya formula.

also refer the attachment.



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