A car moves with a speed of 30 km/hr for 15 minutes and then with a speed of 70 km/hr for another 15 minutes. The total distance covered by the car is

30 km

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60 km

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40 km

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25 km

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Solution

The correct option is D 25 km

$v_{1} = 30 km / hr s_{1} = 30 \times \frac{15}{60} = 7.5 km v_{2} = 70 km / hr s_{2} = 70 \times \frac{15}{60} = 17.5 km Total distance = s_{1} + s_{2} = 7.5 + 17.5 = 25 km$

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A car moves with a speed of 30 km/hr for 15 minutes and then with a speed of 70 km/hr for another 15 minutes. The total distance covered by the car is​

The correct option is D 25 km v1= 30 km/hrs1=30×1560=7.5 kmv2= 70 km/hrs2 = 70×1560=17.5 kmTotal distance = s1+s2 =7.5+17.5=25 km

A car moves with a speed of 30 km/hr for 15 minutes and then with a speed of 70 km/hr for another 15 minutes. The total distance covered by the car is

The correct option is D 25 km

$v_{1} = 30 km / hr s_{1} = 30 \times \frac{15}{60} = 7.5 km v_{2} = 70 km / hr s_{2} = 70 \times \frac{15}{60} = 17.5 km Total distance = s_{1} + s_{2} = 7.5 + 17.5 = 25 km$