You can
put this solution on YOUR website!You can also find solution to this problem through percentage system...and is goes like this
now Let sales person percentage commission on selling a house = x%
and acoording to question ,,i.e. sales person receives $7,500 for selling a house for $120,000 ...we have get the equation..
(7,500/120,000) * 100 = x
on solving it we get
x = 6.25%
Now to calculate his commission on selling house of $150,000 = 150,000 * 6.25%
= $9,375