Question
Gautam travels 160 kms at 32 kmph and returns at 40 kmph. Then his average speed is
Answer: Option B
Answer: (b)Here, distances are equal.Average speed = $({2xy}/{x + y})$ kmph.= $({2 × 32 × 40}/{32 + 40})$ kmph.= $({2 × 32 × 40}/72)$ kmph.= $(320/9)$ kmph. = 35.55 kmph.
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Answer: (b)Here, distances are equal.Average speed = $({2xy}/{x + y})$ kmph.= $({2 × 32 × 40}/{32 + 40})$ kmph.= $({2 × 32 × 40}/72)$ kmph.= $(320/9)$ kmph. = 35.55 kmph.
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