Question

a distance covered 3 hours 48 min at 5 kmph.how much time will taken to cover it at 28.5 kmph ??

A.40 min
B.20 min
c.30 min
d.38 min​

Answer 1

ans is 40 min

Step-by-step explanation:

we know that

speed= distance/ time

therefore

distance= speed*time

from the ques.

speed=5kmph

time= 3hrs 30min =228min.

then

distance= 5*228

=1140km

to find time.... with a speed of 28.5 kmph

then

time= distance/ speed

time=1140/28.5= 40min.

Answer 2

Answer:

40

Step-by-step explanation:

distance=speed×time=5×19\5km. now distance=19km and speed=28.5kmph. Time taken=distance\speed=19\28.5=19\28.5×60=40min