Question 763414
a store increases sales $5000 for every $1500 it spends on advertising how much will sales increase if the store spends $4500 on advertising?
<pre>
$4500 is 3 times as much as $1500 so sales must have increased 3 times as much
as they would have increased if they had spent only $1500, and 3 times $5000
is $15000.

Edwin</pre>