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 ?

Question

নিচের অপশন গুলা দেখুন

• 3.5 hrs
• 1.7 hrs
• 2.2 hrs
• 1.5 hrs

Answer 1

সঠিক উত্তর হচ্ছে: 2.2 hrs

ব্যাখ্যা:

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.