A train covers a distance of 100km in 1 hour. If its speed is decreased by 25km/hr, the time taken by the car to cover the same distance will be? Pick one: A) 1hr B) 1hr 20min C) 50min D) 1hr 30min E) 1hr 45min
Speed = 100/1= 
<gadget id="calculator">100/1</gadget>
<output>100</output>
100km/hr   New speed= 100-25= 
<gadget id="calculator">100-25</gadget>
<output>75</output>
75 km/hr   Time taken= 100/75 = 1hr 20min   Answer is 1hr 20min
<result>B</result>
A train covers a distance of 100km in 1 hour. If its speed is decreased by 25km/hr, the time taken by the car to cover the same distance will be?