Question : The speeds of a boat along and against the current are 14 km/hr and 8 km/hr, respectively. The speed of the current is:
Option 1: 11 km/hr
Option 2: 6 km/hr
Option 3: 5.5 km/hr
Option 4: 3 km/hr
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Correct Answer: 3 km/hr
Solution :
Given:
Downstream speed = 14 km/hr
Upstream speed = 8 km/hr
Speed of current = $\frac{\text{Downstream speed}-\text{Upstream speed}}{2}$
= $\frac{14–8}{2}$
= $\frac{6}{2}$
= 3 km/hr
Hence, the correct answer is 3 km/hr.
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