A man completes 30 km of a journey at the speed of 6 km/hr and the remaining 40 km of the journey in 5 hours. His average speed for the whole journey is

A man completes 30 km of a journey at the speed of 6 km/hr and the rem

1.	A man completes 30 km of a journey at the speed of 6 km/hr and the remaining 40 km of the journey in 5 hours. His average speed for the whole journey is
A.	7 km/hr
B.	<table><tr><td rowspan="2">6</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>4</center></td><td rowspan="2">km/hr</td></tr><tr><td style="text-align: center;">11</td></tr></table>
C.	8 km/hr
D.	7.5 km/hr
Answer» B. <table><tr><td rowspan="2">6</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>4</center></td><td rowspan="2">km/hr</td></tr><tr><td style="text-align: center;">11</td></tr></table>

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