Question

The odometer of a moving car reads 4820.0 km when the clock shows the time 8:30 a.m. . At 8:50 a.m. the odometer reading shows 4864.0 km. What is the speed of the car in km/hr during this time?

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Answer 1

Answer:

The initial reading of the odometer of the car =57321.0 km

The final reading of the odometer of the car = 57336.0 km

The car starts at 8:30 AM and stops at 8:50 AM.

Distance covered by car = (57336 - 57321) km = 15 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 travelled)/ (Time)

= (15km)/ (20min)

= 0.75km/min

Speed in km/h Speed = (Distance travelled)/ (Time)

= (15km)/ (1/3h)

= (15 x 3) km/ (1h)

= 45km/h

Answer 2

Answer:

132Km/hr

Explanation:

Distance = 4864 - 4820

= 44 km

Speed in km/min = 44/20

= 11/5

Speed in km/hr =

$\frac{11}{5} \times 60$

= 132Km/hr

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