Hi there! Marry jogs about with a speed of 3.3 m/s
First we need to find Marry's speed in km/h.
1 km equals 5 minutes (now divide both sides by 12)
12 km equals 60 minutes.
Therefore, Marry jogs 12 km in 60 mins. Her speed is 12 km/h.
To convert km/h to m/s we need to divide by 3.6.
Hence, 12 km/h = 12 / 3.6 = 3.3333... m/s
