Excluding the stoppages, the speed of a bus is 64 km/hr and including the stoppages the speed of the bus is 48km/hr. For how many minutes does the bus stop per hour? 15 min 10 min 12 min 20 min
Question
Excluding the stoppages, the speed of a bus is 64 km/hr and including the stoppages the speed of the bus is 48km/hr. For how many minutes does the bus stop per hour? 15 min 10 min 12 min 20 min
Solution
The problem can be solved by finding the difference in speed when the bus is moving and when it includes stoppages.
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First, find the difference in speed: 64 km/hr - 48 km/hr = 16 km/hr. This is the speed lost due to stoppages.
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Then, calculate the proportion of time lost due to stoppages: 16 km/hr / 64 km/hr = 0.25. This means 25% of the time is lost due to stoppages.
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Finally, convert this proportion to minutes: 0.25 * 60 minutes = 15 minutes.
So, the bus stops for 15 minutes per hour.
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