Question

a boat takes 24km downstreams and returns in 5hr. it takes 8 hours to go 36km downstreams and 40km upstream. find the speed of the boat in still water
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Answer 1

Answer = 5.5 km/hour

Description for Correct answer:

Speed of upstream, U

=408= 5 km/h

Speed of Downstream, D =366= 6 km/h

Speed of boat in still water, x

=D+U2

=5+62=112=5.5 km/h.

Answer 2

Step-by-step explanation:

Downstream speed = 40+24km/5 =14.8km/h

Upstream speed = 36/8 = 4.5km/h

14.5 = speed of boat - speed of water

4. 5 = speed of boat + speed of still water(zero)

19 km/h = 2(speed of boat) - 4

Speed of boat is = 5.5km/h