A) 50 km
B) 75 km
C) 150 km
D) 200 km
Correct Answer: B
Solution :
Speed of a car in 1st 30 minutes \[=\frac{30}{60}=(0.5\,h)=50\,km\,{{h}^{-1}}\] Distance travelled in the 1st 30 minutes = speed \[\times \] time = 50 \[\times \] 0.5 = 25 km Speed of a car in the next 30 minutes \[=100\text{ }km\,{{h}^{-1}}\] Distance travelled in the next 30 minutes \[=speed\times time=100\times \frac{1}{2}=50\,km\] Total distance covered = 50 + 25 = 75 km.You need to login to perform this action.
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