The odometer of a car reads 57321.0 km when the clock shows the time 08:30 AM. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.

Distance covered by car = 57336.0 km – 57321.0 km = 15.0 km
Time taken between 08:30 AM to 08:50 AM = 20 minutes = 20/60 hour = 1/3 hour
So, speed in km/min

Speed= 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑐𝑜𝑣𝑒𝑟𝑒𝑑 / 𝑇𝑖𝑚𝑒 𝑡𝑎𝑘𝑒𝑛 =15 km / 20km = 0.75 𝑘𝑚 / 𝑚𝑖𝑛
Speed= 𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑐𝑜𝑣𝑒𝑟𝑒𝑑 / 𝑇𝑖𝑚𝑒 𝑡𝑎𝑘𝑒𝑛 = 15 km / 1/3h= 15 x 3 km = 45 km / h

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