A train travels 2 1/2 hrs at 90 kmph to travel the same distance in

1.	A train travels 2 1/2 hrs at 90 kmph to travel the same distance in 2 hours, how much speed required for the train?A) 112 1/2 km/hrs B) 110 km/hrs C) 141 1/2 km/hrs D) None
Answer» Correct option is (A) \(112\frac12\,km/hrs\) Distance covered by train in \(2\frac12\) hrs = speed \(\times\) time = 90 \(\times\) \(2\frac12\) km = 90 \(\times\) \(\frac52\) km = 45 \(\times\) 5 km = 225 km \(\therefore\) Speed required to covered same distance (225 km) in 2 hours \(=\frac{Distance}{Time}\) \(=\frac{225}2\,km/hrs\) \(=112\frac{1}2\,km/hrs\) A) 112 1/2 km/hrs

A train travels 2 1/2 hrs at 90 kmph to travel the same distance in 2 hours, how much speed required for the train?A) 112 1/2 km/hrs B) 110 km/hrs C) 141 1/2 km/hrs D) None

Answer»

Correct option is (A) \(112\frac12\,km/hrs\)

Distance covered by train in \(2\frac12\) hrs = speed \(\times\) time

= 90 \(\times\) \(2\frac12\) km = 90 \(\times\) \(\frac52\) km

= 45 \(\times\) 5 km = 225 km

\(\therefore\) Speed required to covered same distance (225 km) in 2 hours \(=\frac{Distance}{Time}\)

\(=\frac{225}2\,km/hrs\) \(=112\frac{1}2\,km/hrs\)

A) 112 1/2 km/hrs