|A) 48 kmph||B) 50 kmph|
|C) 46 kmph||D) 42 kmph|
we know that speed = distance traveled/time taken
let the total distance traveled by the car is 2x km.
then time taken by it to cover first half is hour.
and for second half is hour.
Then average speed= total distance travelled / total time taken.
= 48 kmph.