Question

The odometer of a car reads 350 km when the clock shows the time 12:30 pm. What is the distance moved by car, if at 1 pm, the odometer reading has changed to 500 km? Calculate the speed of the car in km/min during this time. Express the speed in km/hr. [5 MARKS]

Answer 1

Distance covered by car: 1 Mark
Speed in km/min = 1 Mark
Speed in km/hr = 1 Mark
Steps: 1 Mark
Formula: 1 Mark

Initial reading = 350 km

Final reading = 500 km

Distance covered = 500 - 350 = 150 km

Time taken = 30 minutes

$\text{Speed}=\frac{\text{distance}}{\text{time}}=\frac{150}{30}=5$ km/min

Speed in km/hr = $5\times 60=300$ km/hr