Question

A boat travels up stream from B to A and downstream from A to B in 3 h. If the speed of the boat in still water is 9 km/h and the speed of the current is 3 km/h , the distance between A and B is: (A) 9 km (C) 11 km (B) 10 km (D) 12 km 2 | ​

Answer 1

Answer:

11 kmhwhshshshbsbdhdhdh

Answer 2

Answer:

12 km

Step-by-step explanation:

Let the distance between A and B be x km.

Upstream speed =9−2=6 kmph

Downstream speed =9+3=12 kmph

x/6 + x/12

=3⇒ 2x+x/12

=3⇒3x=36⇒x=12 km.