Question

The speed of a boat in still water is 10 km/hr. The stream has a current of 2km/hr. The boat takes 2 hours more to cover a trip from A to B than it took to go from B to A. What is the distance between A and B?
30 km
16 km
48 km
40 km
32 km; The speed of a boat in still water is 10 km/hr. The stream has a current of 2km/hr. The boat takes 2 hours more to cover a trip from A to B than it took to go from B to A. What is the distance between A and B?; 30 km; 16 km; 48 km; 40 km; 32 km

Answer 1

Let time be x

Speed in still=10km/hr

Speed in stream=2km/hr

Time, For A to B =x

For B to A=x+2

Distance = d

Speed=d/x

10=d/x

Therefore, d=10x----1st

From AtoB:

2=d/x+2

Therefore, d=2x+4----2nd

Putting 1st in 2nd :

10x=2x+4

Therefore, x=1/2

Now, putting in 1st :

d=10*1/2=5km answer

Answer 2

Answer:

Step-by-step explanation:x/8-x/12=2