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A Bus is running at a speed of 80 km/h. After 2 hours of journey its tyre punctured and the speed decreased by 25% and the Bus reached its destination 1 hour late. If the total journey took total 3 hours due to tyre puncture, then what is the total distance covered by the Bus?
1. 100 km
2. 2.20 km
3. 240 km
4. 160 km
5. None of these

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Correct Answer - Option 5 : None of these

Given:

Speed of Bus = 80 km/h

Decrease in speed = 25%

Time by which Bus is late = 1 hour

Time for which Bus travelled at 80 km/h = 2 hours

Formula used:

Speed = Distance/Time

Calculations:

Decreased speed of Bus = 80 - (80 × 25%)

⇒ 80 - 20

⇒ 60 km/h

Total Distance covered = Distance covered at 80 km/h + Distance covered at 60 km/h

⇒ (80 × 2) + (60 × 1)

⇒ 160 + 60

⇒ 220 km

∴ The total distance covered by the Bus is 220 km.

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