A) \[12\frac{1}{2}\]km/hr
B) 13 km/hr
C) 15 1/8 km/hr
D) 20 km/hr
Correct Answer: A
Solution :
[a] Total Distance =100 km Distance travelled in first 2hr \[=2\times 20=40\] Remaining distance \[=100-\,40=60\,\,km\] Time taken = \[\frac{60}{10}=6hr\] \[Av\,\,speed=\frac{Total\,\,dis\tan ce}{Total\,\,time}=\frac{100}{8}=12\frac{1}{2}\,\,Km/hr\]You need to login to perform this action.
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