Question

Find the speed of stream if a speed of boat moving
upstream is 10km/hr and distance travelled in 16 km in
8 hours ??​

Answer 1

Answer:

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• D. 10 km/hr. Speed in still water = 12(14+8) kmph 1 2 ( 14 + 8 ) kmph = 11 kmph. 4.

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Answer 2

Answer:

Given:

Speed of boat in still water = 10 km/hr

Formula:

Speed distance/time

Upstream speed = Speed of boat - speed of current

Downstream speed = speed of boat + speed of boat

Calculation:

Let speed of boat be x km/hr

Upstream speed = (10 - x) km/hr

Downstream speed = (10 + x) km/hr

solution:

Time = distance/time

Time = 26/(10 + x)

Time=14/(10-x)

26/(10+x)=14/(10-x)

26(10-x)=14(10+x)

260-26x=140+14x

26x+14x=260-140

40x=120

x=120/40

x=3km/hr

Step-by-step explanation:

hope it helps you.