Question

A person travel a total distance of 360 km.he cover the first half at a speed of 75 km/h and the other half at 45 km/h.find the total time taken to complete the entire journey

Answer 1

$\huge\bold\red{Hello:-}$

$averge \: speed = \frac{total \: distance}{time}$

$\frac{s1 + s2}{t1 + t2}$

$= > \frac{x + x}{ \frac{x}{36} + \frac{x}{54} }$

$= > \frac{2x}{ x\frac{1}{36} + \frac{1}{54} }$

$= \frac{216}{5}$

$= 43.2 \: \frac{km}{s}$

☆Mark me Brainlist☆