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Q.
A Bus is running at 9/10 of its own speed reached a place in 22 hours. How much time could be saved if the bus would run at its own speed ?
A.
1.5 hrs
B.
1.7 hrs
C.
2.2 hrs
D.
3.5 hrs
View Answer
Correct choice: C
Explanation:
Let the original Speed be "s" kmph And the usual time be "t" hrs Given that if the bus is running at 9s/10 kmph the time is 22 hrs => [9s/10] x 22 = t x s => 99/5 = t => t = 19.8 hrs Hence, if bus runs at its own speed, the time saved = 22 - 19.8 = 2.2 hrs.
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