The speed of a boat in still water in 12 km/hr and the rate of current is 4 km/hr. The distance travelled downstream in 12 minutes is
Question
The speed of a boat in still water in 12 km/hr and the rate of current is 4 km/hr. The distance travelled downstream in 12 minutes is
Solution
Step 1: Convert the time from minutes to hours. Since there are 60 minutes in an hour, 12 minutes is equal to 12/60 = 0.2 hours.
Step 2: Calculate the speed of the boat downstream. The speed of the boat in still water is 12 km/hr and the rate of the current is 4 km/hr. When the boat is moving downstream, the current helps the boat move faster. So, the speed of the boat downstream is the speed of the boat in still water plus the speed of the current, which is 12 km/hr + 4 km/hr = 16 km/hr.
Step 3: Calculate the distance travelled downstream. The distance travelled is the speed of the boat downstream times the time. So, the distance travelled downstream is 16 km/hr * 0.2 hr = 3.2 km.
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