Answer:
[tex]3\frac{3}{5}\ sec[/tex] or [tex]3.6\ sec[/tex]
Step-by-step explanation:
we know that
To find out how much faster is Paloma than Savannah in the 100- meter dash, subtract the Paloma's time from the Savannah's time
so
[tex]19.8-16\frac{1}{5}[/tex]
step 1
Convert mixed number to an improper fraction
[tex]16\frac{1}{5}\ sec=\frac{16*5+1}{5}=\frac{81}{5}\ sec[/tex]
step 2
Convert decimal number in fraction number
[tex]19.8\ sec=\frac{198}{10}\ sec[/tex]
Simplify
[tex]\frac{99}{5}\ sec[/tex]
step 3
Substitute the values
[tex]19.8-16\frac{1}{5}=\frac{99}{5}-\frac{81}{5}=\frac{18}{5}\ sec[/tex]
Convert to mixed number
[tex]\frac{18}{5}\ sec=\frac{15}{5}+\frac{3}{5}=3\frac{3}{5}\ sec[/tex]
Convert to decimal number
[tex]\frac{18}{5}\ sec=3.6\ sec[/tex]
