Question 858113
 
If they played 80 games and won x of them, then they lost 4 times that, or 4x.
Assuming no ties, every game was either won or lost. Therefore, the lost games plus the won games is the total number of games. In other words,
 
{{{4x+x=80}}}
Combine Like Terms
{{{5x=80}}}
Divide both sides by 5
{{{x=16}}}
 
They won 16 games.