If the boat goes 7 kms upstream in 42 min and speed of the stream is 3 kmph, then the speed of the boat in still water ?
A) 14 kmph
B) 13 kmph
C) 12 kmph
D) 11 kmph
Answers
Answered by
0
Rate upstream = (7/42)*60 kmh = 10 kmph.
Speed of stream = 3 kmph.
Let speed in sttil water is x km/hr
Then, speed upstream = (x —3) km/hr.
x-3 = 10 or x = 13 kmph
Speed of stream = 3 kmph.
Let speed in sttil water is x km/hr
Then, speed upstream = (x —3) km/hr.
x-3 = 10 or x = 13 kmph
Answered by
0
✨✨Here is your answer mate✨✨
Rate of upstream = 7/42 × 60 kmh = 10 kmph
Stream speed = 3 kmph
Let the speed of still water = x
Then of upstream = (x-3)
x - 3 = 10
x = 10 + 3
x = 13
✨Hope this helps you.✌️✌️
Rate of upstream = 7/42 × 60 kmh = 10 kmph
Stream speed = 3 kmph
Let the speed of still water = x
Then of upstream = (x-3)
x - 3 = 10
x = 10 + 3
x = 13
✨Hope this helps you.✌️✌️
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