A boat moves downstream at the rate of 8 km per hour and upstream at 4 km per hour. The speed of the boat in still waters is:
Question
A boat moves downstream at the rate of 8 km per hour and upstream at 4 km per hour. The speed of the boat in still waters is:
Solution
The speed of a boat in still water is calculated by taking the average of its downstream and upstream speeds.
Here's how you can calculate it:
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First, add the downstream speed and the upstream speed. In this case, 8 km/h (downstream speed) + 4 km/h (upstream speed) = 12 km/h.
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Then, divide the result by 2 (because we are finding the average). So, 12 km/h ÷ 2 = 6 km/h.
Therefore, the speed of the boat in still waters is 6 km/h.
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