Question

Ravi walks to school which is at a distance of 3 km from his home in 30 minutes. On
reaching, he finds that the school is closed and comes back again in next 30 minutes. What
will be his average speed in km/h?

Answer 1

Answer:-

Distances travelled.

• 3km,3km

Times taken

• 1/2hour,1/2hour

We know

$\boxed{\sf Average\:Speed=\dfrac{Total\:Distance}{Total\;Time}}$

$\\ \sf\longmapsto Average\:Speed=\dfrac{3+3}{\frac{1}{2}+\frac{1}{2}}$

$\\ \sf\longmapsto Average\:Speed=\dfrac{6}{1}$

$\\ \sf\longmapsto Average\:Speed=6km/h$

Answer 2

$\\⠀⠀\bigstar \:⠀⠀⠀\underbrace\bold{\large\underline{Given: - }}$

• Distance Travelled = (3×2) km

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 6 km

• Time Taken = (30×2) mins

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 60 mins

$\huge\red{\mid{\underline{\overline{\textbf{SOLUTION:}}}\mid}}$

We know that;

$\large{ \pink{\mathfrak{ \underline{\overline{\mid \:\: Average\:Speed=\:\: \mid}}}}}$

$\huge\frac{Total ⠀Distance ⠀Travelled }{Time ⠀Taken}$

=$\large\frac{6}{1}$ km/hr

Therefore, Average Speed = 6 km/hr