Question

Paloma can run the 100 meter dash in the 16 1/5 seconds Savannah’s best time is 19.8 seconds how much faster is Paloma than Savannah in the 100- meter dash

Answer 1

Answer:

$3\frac{3}{5}\ sec$ or  $3.6\ sec$

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

$19.8-16\frac{1}{5}$

step 1

Convert mixed number to an improper fraction

$16\frac{1}{5}\ sec=\frac{16*5+1}{5}=\frac{81}{5}\ sec$

step 2

Convert decimal number in fraction number

$19.8\ sec=\frac{198}{10}\ sec$

Simplify

$\frac{99}{5}\ sec$

step 3

Substitute the values

$19.8-16\frac{1}{5}=\frac{99}{5}-\frac{81}{5}=\frac{18}{5}\ sec$

Convert to mixed number

$\frac{18}{5}\ sec=\frac{15}{5}+\frac{3}{5}=3\frac{3}{5}\ sec$

Convert to decimal number

$\frac{18}{5}\ sec=3.6\ sec$