Correct option is (D) 3
Distance covered by car by travelling 60 kmph in 4 hours = speed \(\times\) time
\(=60\times4\) = 240 km
When car travels at 80 kmph then time by the car \(=\frac{Distance}{Speed}\)
\(=\frac{240}{80}\) =...
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 \(=\frac{Distance}{Time}\)
\(=\frac{225}2\,km/hrs\) \(=112\frac{1}2\,km/hrs\)
