Question

Dista ce is 250 m and time is 25 sec find speed im km/hr

Answer 1

Answer:

3/5 km/hr

Explanation:

250m=.0.25km

25sec=5/12 min

speed=0.25÷5/12=3/5km/hr

Answer 2

Answer:

Distance = 250 m or 250/1000 km

=1/4 km

Time =25 sec or 25/3600 hr

=1/144 hr

speed = distance / time

=1*144 /1*4

= 144/4

= 36 km/ h

For short trick yo change m/ sec into km/ hr is to multiply with 18/5

= 250/25. =10 m/ sec

=10*18/5. =36 km/ hr