Question
Download Solution PDFA boy can swim in still water at a speed of 10 km/hr. If the speed of the current would have been 5 kmph, •then the boy could swim 60km downstream (along the flow) in how much time ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
A boy can swim in still water at a speed of 10 km/hr.
Speed of the current = 5 km/hr
Distance to be covered downstream = 60 km
Formula used:
Time = Distance / Speed
Calculation:
Downstream speed = Speed in still water + Speed of the current
⇒ Downstream speed = 10 km/hr + 5 km/hr
⇒ Downstream speed = 15 km/hr
Time = Distance / Speed
⇒ Time = 60 km / 15 km/hr
⇒ Time = 4 hours
∴ The correct answer is option (2).
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