While going to office, Shriram travesl at a speed of 20 kmph and on his way back, he travels at a speed of 35 kmph . What is his average speed of the whole journey?
To find the average speed for the whole journey, we use the formula:
\[
\text{Average Speed} = \frac{2xy}{x + y}
\]
where:
\( x = 20 \) kmph (speed while going)
\( y = 35 \) kmph (speed while returning)
\[
\text{Average Speed} = \frac{2(20)(35)}{20 + 35}
\]
\[
= \frac{1400}{55}
\]
\[
\approx 25.45 \text{ kmph}
\]
Final Answer: 25.45 kmph
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