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A man goes from A to B at a uniform speed of 12 kmph and returns with a uniform speed of 4 kmph His average speed (in kmph) for the whole journey is :
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- 8
- 7.5
- 6
- 4.5
Correct Option: C
If two equal distances are covered at two unequal speed of x kmph and y kmph, then average
| speed = |  |  | kmph | |
| x + y |
| = | = | = 6 kmph | ||
| 12 + 4 | 16 |
