A boat travels 30 km downstream in 2 hours. If the speed of the current is 5 km/h, what is the speed of the boat in still water?

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Q: A boat travels 30 km downstream in 2 hours. If the speed of the current is 5 km/h, what is the speed of the boat in still water?

Solution: Speed downstream = Distance/Time = 30/2 = 15 km/h. Speed of boat = Speed downstream - Speed of current = 15 - 5 = 10 km/h.

Steps: 5

Step 1: Identify the distance traveled downstream, which is 30 km.
Step 2: Identify the time taken to travel that distance, which is 2 hours.
Step 3: Calculate the speed downstream using the formula: Speed = Distance / Time. So, Speed downstream = 30 km / 2 hours = 15 km/h.
Step 4: Identify the speed of the current, which is given as 5 km/h.
Step 5: To find the speed of the boat in still water, subtract the speed of the current from the speed downstream. So, Speed of the boat = Speed downstream - Speed of current = 15 km/h - 5 km/h = 10 km/h.