posted by Kathy .
John earns a commission of $175 ON SALES OF $3000. How much does he earn on sales of $6500.
(6500/3000) * 175 = ?
Or... if you have been taught to set it up as a proportional situation you have
Commission/sales = commission/sales
Steve just showed you the work once you have already got your proportional situation arranged : ) The question shows $175/$3000 and you need to know the commission for $6500 in sales...
$175/$3000 = Commission/$6500
So solve for Commission just as Steve did by multiplying both sides by 6500 : )