Question

What is the difference in speed between two cars when one traveled 175 km in 4 hours and the other traveled the same distance in 3 hours?

Answer 1

Given :

• Distance = 175
• Time 1 = 4 hours

To find:

• Different between two speeds when distance is same.

Solution:

Part 1 :

In first part we will find speed 1 in which time is 4 hours

we know:-

$\bigstar \boxed{ \rm speed = \frac{distance}{time} }$

So:-

$\dashrightarrow\sf speed_1 = \dfrac{distance}{time_1}$

$\dashrightarrow\sf speed_1 = \dfrac{175}{4}$

$\dashrightarrow\bf speed_1 = 43.75 \: km {h}^{ - 1}$

Part 2

In first part we will find speed 2 in which time is 3 hours

Again:

$\bigstar \boxed{ \rm speed = \frac{distance}{time} }$

$\dashrightarrow\sf speed_2 = \dfrac{distance}{time_2}$

$\dashrightarrow\sf speed_2 = \dfrac{175}{3}$

$\dashrightarrow\bf speed_2 = 58.33kmh^{-1}$

Part 3

In this part we will find different between speed 1 and speed 2

$\bigstar \boxed{\rm Difference = speed_2 - speed_1}$

So :

$\dashrightarrow\sf Difference = speed_2 - speed_1$

$\dashrightarrow\sf Difference =58.33 - 43.75$

$\dashrightarrow\bf Difference =14.58kmh^{-1}$

$\therefore \underline {\textsf{\textbf{Difference in speed between two cars is \red{14.58km/h}}}}$