Question
A boat takes 24 hours to cover 'q' km in still water.
While traveling downstream, it takes 16 hours to cover (q - 80) km. If the speed of the boat in still water is 4 times the speed of the stream, then find the speed of the stream.Solution
ATQ, Let the speed of the stream be = v km/h. Speed of the boat in still water = 4v km/h. Using the equation: 
Downstream speed = 4v + v = 5v km/h. Using the downstream equation: 
From equations (I) and (II): 
Thus, the speed of the stream is 5 km/h.
More Boats and streams Questions
- What will come in place of (?), in the given expression.
125% of 96 + 33% of 300 = ? What will come in the place of question mark (?) in the given expression?
√144 X √324 + ? = 83 + 31 X √16
The value of 11 × 11 + 11 ÷ 11 – 11 × 11 + 11 + 11 × 11 – 11 – 11 × 11 is:
√ 225 x 24 - √ 144 x 18 = ?
(64/25)? × (125/512)?-1 = 5/8
Find the simplified value of the following expression:
[{12 + (13 × 4 ÷ 2 ÷ 2) × 5 – 8} + 13 of 8]
40 of 30% of 220 = ? + 790
[(4/3) + (5/6)] of 378 = ?
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