Respuesta :
Given:
On the first day, she drove 650 miles in 10 hours.
On the second day, she got a later start and drove 540 miles in 8 hours.
To find:
Difference between average speed of second day and first day.
Solution:
We know that,
[tex]Speed=\dfrac{Distance}{Time}[/tex]
On the first day, she drove 650 miles in 10 hours. So, the average speed is
[tex]Speed=\dfrac{650}{10}[/tex]
[tex]Speed=65[/tex]
So, the average speed on first day is 65 miles per hour.
On the second day, she got a later start and drove 540 miles in 8 hours.
[tex]Speed=\dfrac{540}{8}[/tex]
[tex]Speed=67.5[/tex]
So, the average speed on second day is 67.5 miles per hour.
Difference between average speed is
[tex]67.5-65=2.5[/tex]
Therefore, the average speed on the second day is 2.5 miles per hour is faster than first day.
