A person covers 10 kms at 4 km per hr. and then further 21 kms at 6 km per hr. Find his average speed for whole journey.

A person covers 10 kms at 4 km per hr. and then further 21 kms at 6 km

1.	A person covers 10 kms at 4 km per hr. and then further 21 kms at 6 km per hr. Find his average speed for whole journey.
A.	<table><tr><td rowspan="2">5</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">kmph</td></tr><tr><td style="text-align: center;">3</td></tr></table>
B.	<table><tr><td rowspan="2">5</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">kmph</td></tr><tr><td style="text-align: center;">6</td></tr></table>
C.	<table><tr><td rowspan="2">5</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">kmph</td></tr><tr><td style="text-align: center;">2</td></tr></table>
D.	<table><tr><td rowspan="2">4</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">kmph</td></tr><tr><td style="text-align: center;">2</td></tr></table>
Answer» C. <table><tr><td rowspan="2">5</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">kmph</td></tr><tr><td style="text-align: center;">2</td></tr></table>

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A person covers 10 kms at 4 km per hr. and then further 21 kms at 6 km per hr. Find his average speed for whole journey.

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