Question

The speed of a boat in still water is 8km/h. If the boat covers a distance of 15.5 km downstream in 1.5 hours, find the speed of the the current .

Answer 1

speed in current=15.5/1.5
=10.3333....
speed of current=speed of boat in current- speed of boat in water
=10.33333......-8
=2.333333...km/hr


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Answer 2

The speed of the current is 7/3 or 2.33 km/hr

Step-by-step explanation:

Consider the provided information.

The speed of a boat in still water is 8 km/hr.

Let x is the speed of stream.

Therefore, the speed of boat in downstream is 8+x km/hr.

The boat covers a distance of 15.5 km downstream in 1.5 hours,

As we know: $Speed =\frac{Distance}{Time}$

$8+x=\frac{15.5}{1.5}$

$8+x=\frac{31}{3}$

$24+3x=31$

$3x=7$

$x=\frac{7}{3}$ or $x=2.333$

Hence, the speed of the current is 7/3 or 2.33 km/hr.

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