A) \[\frac{24}{13}\]
B) \[\frac{40}{13}\]
C) 3
D) \[\frac{1}{2}\]
Correct Answer: B
Solution :
[b] Total time (T) \[=\frac{6}{2.5}+\frac{6}{4}\] \[=\frac{12}{5}+\frac{3}{2}=\frac{39}{10}\,\,h\] Average speed (V) \[=\frac{6+6}{39/10}=\frac{120}{39}\] \[=\frac{40}{13}\] km/hYou need to login to perform this action.
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