Question

A boat travels 30 km upstream in 5 hrs and 28 km downstream in 4 hirs. Find the speed of the
boat in still water and speed of the water current.
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Answer 1

Answer:

Speed of the boat in still water is 6.5 Km's per hour..

and the speed of river Tide is 0.5 kmph

Step-by-step explanation:

let us assume the speed of the boat in still water as 'B' and the river as 'R'..

now while going upstream...

the effective speed would be (B-R) as the boat and the water is going opposite ways..

and that we can calculate as 30/5 ..

so B-R=6..........(1).

similarly while going downstream..

the equation will be..

B+R=7.........(2)..

adding both the equations we get 2B as 13..

so B comes 6.5...

and by putting B in any of the previous equations we get R as 0.5..

#SPJ3