For this case we have the following mixed numbers:
[tex]3 \frac {39} {40} = \frac {3 * 40 + 39 * 1} {40} = \frac {120 + 39} {40} = \frac {159} {40} = 3.975[/tex]
[tex]3 \frac {19} {20} = \frac {3 * 20 + 19 * 1} {20} = \frac {60 + 19} {20} = \frac {79} {20} = 3.95[/tex]
[tex]3 \frac {19} {20} = \frac {3 * 20 + 19 * 1} {20} = \frac {60 + 19} {20} = \frac {79} {20} = 3.95[/tex]
It is noted that the last two numbers are the same.
Also, it is observed that:
[tex]3.975> 3.95[/tex]
Answer:
Order from highest to lowest:
[tex]3 \frac {39} {40}, 3 \frac {19} {20}[/tex]
Order from least to greatest:
[tex]3 \frac {19} {20}, 3 \frac {39} {40}[/tex],
