1.

A train travels a certain distance at 60 km/hr in 2 hours. By how much percent its speed must be increased in order to travel twice the distance in same time? 1. 200 %2. 150 %3. 100 %4. 50 %5. 300 %

Answer» Correct Answer - Option 3 : 100 %

Formula Used :

Speed = Distance/Time

Calculations :

Initial distance = d= speed1 × time 1

⇒ d1= 60 × 2 = 120km

Now if the distance is doubled then speed will be = (2 × 120)/2 km/hr

⇒ 120 km/hr

Percentage increased = (120 – 60)/60 × 100 %

⇒ 100% 

The percentage increase is 100% 



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