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Excluding stoppages, the speed of a bus is 60 km/h. and including stoppages, it is 48 km/h. For how many minutes does the bus stop per hour?1. 82. 123. 154. 10 |
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Answer» Correct Answer - Option 2 : 12 Given: Excluding stoppages, the speed of a bus = 60 km/h Including stoppages, the speed of a bus = 48 km/h Formula used: Time = Distance/Speed Calculations: In one hour Distance travelled excluding stoppage = 60 km Distance travelled including stoppage = 48 km Difference in distance = 60 – 48 = 12 km Because of the stoppage, 12 km less is travelled So, stoppage time per hour = 12/60 = 1/5 h ⇒ 60/5 = 12 minutes ∴ The bus stops 12 minutes in a hours. |
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