Question

A motor boat takes 2 hours to travel a distance 9 km.

down the current and it takes 6 hours to travel the

same distance against the current. The speed of the

boat in still water and that of the current (in km/

hour) respectively are

(a) 3, 1.5 (b) 3, 2

(c) 3.5, 2.5 (d) 3, 1​

Answer 1

Answer:

what do you mean when u asked this question I don't get it

Answer 2

Answer: (a)

Explanation:

LET THE SPEED OF STILL WATER BE X AND CURRENT BE Y.

SPEED OF BOAT IN DOWNSTREAM= X+Y

SPEED OF BOAT IN

UPSTREAM X- Y

SPEED =DISTANCE / TIME

X+Y= 9/2...... ( 1 )

X- Y = 3/2.... ( 2)

( 1 ) + ( 2 ) , we get

x= 3 km/ hour

y= 1.5 km/hour.