Question 1169800
VARIABLES
<pre>
COIN   Quantity
20c    x
50c    y
$1     u
</pre>

Description made becomes this initial system:
{{{system(x+y+u=36,u/x=2,0.5y=0.2x+4.4)}}}----------the system to be solved.

Try to write a single equation in just the one variable, x.


{{{system(x+y+u=36,u=2x,y=2x/5+44/5)}}}


One equation in only x:
{{{highlight_green(x+(2x/5+44/5)+2x=36)}}}


Simplification and solution just for x:
{{{highlight(x=8)}}}


Use that to find u and y.