Sarah's speed is [tex] \frac{ 1\frac{3}{4} miles}{50 mins} [/tex]
Is the same as, [tex] \frac{ \frac{7}{4} mile}{50 mins} [/tex]
We need to find her speed in miles/hr.
We have her speed in miles/min.
So, we have to convert the 50 mins to hour.
1 minute = [tex] \frac{1}{60} [/tex] hour
∴ 50 minute = [tex]50* \frac{1}{60} [/tex] hours
= [tex]50* \frac{1}{60} [/tex] hours
= [tex] \frac{50}{60} [/tex] hours
= [tex] \frac{5}{6} [/tex] hours
So, Sarah's speed in miles per hour is - [tex] \frac{\frac{7}{4} miles}{ \frac{5}{6} hrs} [/tex].
Also, as [tex] \frac{7}{4} [/tex] is equal to 1.75.
And, as [tex] \frac{5}{6} [/tex] is equal to 0.83.
So, Sarah's speed can also be expressed as [tex] \frac{1.75 miles}{0.83 hrs} [/tex]
