Question

Car travels distance of 280 km in 6½ hrs. Find its speed in minute/second

Answer 1

in min
distance =280
280×1000/60
4666.6m
time =6×60+30
390 min
speed =distance /time
4666.6/390
51.85
51.85m/min

in second
distance 4666.6 m
time =390×60
=23400 S

speed =distance /time
4666.6/23400
0.19 m/s