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A bus covers a distance from Town R to Town S at a speed of 29 kmph and covers the distance from Town S to Town R at a speed of 26 kmph. Find the approximate average speed of the bus?
1. 29 kmph
2. 28.5 kmph
3. 27 kmph
4. 26 kmph

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Best answer
Correct Answer - Option 3 : 27 kmph

Given:

Bus’s speed from Town R to Town S = 29 kmph

Bus’s speed from Town S to Town R = 26 kmph

Formula Used:

Average Speed = 2 (A × B) / (A + B)

Calculations:

As two equal distance are covered at two different speed

Average Speed = 2 (A × B) / (A + B)

⇒ Average Speed = 2 × 29 × 26 / (29 + 26)

⇒ Average Speed = 1508 / 55

⇒ Average Speed = 27.41 ≈ 27.

The approximate average speed of the bus is 27 kmph.

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