A bus travelling at a speed of 36 km per hour covers a certain distance in 4 and a half hours. How long will it take to cover the same distance if it increases its speed by 4 km per hour?
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Answer:
4 hr 3 mins or 4.05hr
Step-by-step explanation:
Distance = Speed × Time
= 36 × 4.5
= 162 km
Speed increases by 4 i.e, 36+4=40
Time = Distance/Speed
= 162/40
= 4.05
= 4hr 3 mins
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