Question

a car travel 510 km distance in 12 hours find its speed in m/second​

Answer 1

Answer:

Remember : Converting time units

Times decimal of hour by 60 to get minutes:

1.15hrs means 1hr 9 minutes, not 1 hr 15 minutes

Divide minutes by 60 to get decimal of hour:

3hrs 45 minutes = 3.75 hours , not 3.45 hours