A boat running up stram takes 5 hours to cover a certain distance, while it takes 8 hours to cover the same distance running down stream. what is the ratio between the speed of the boat and the speed of water current respectively? Select the correct option
A) 2 : 3
B) 5 : 6
C) 4 : 5
D) 7 : 1
E) 13 : 3
13 : 3xplanation:   Let speed of boat is x km/h and speed stream is y km/hr   5(x+y) = 8(x-y)   5x+5y = 8x-8y   13y = 3x   x/y = 13/3   13 : 3   Answer: Option 13 : 3
<result>E</result>
A boat running up stram takes 5 hours to cover a certain distance, while it takes 8 hours to cover the same distance running down stream. what is the ratio between the speed of the boat and the speed of water current respectively?