A car reaches 300 km in 6 hours then how much distance is travelled by the car in 8 hours ?

D) Speed of light is constant when it has passed through medium for all colotus.

A) 12 : 22 : 32 

Correct option is B) 50 km h-1  

C) 50 km / hour

C) Marble surface

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 (D) 400 km Speed of the car \(=\frac{Speed}{Time}\) \(=\frac{300\,km}{6\,hours}\) = 50 km/h Distance travelled by the car in 8 hours = speed \(\times\) time = 50 km/h \(\times\) 8 hours = (50 \(\times\) 8) km = 400 km

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

Correct Answer - (a) Both the statements are true and statement -2 is correct explanation of statement-1.