<PRE><B>Question 1180977</B>
&lt;br&gt;
A key to one way to solve a problem like this, in which the given information is that 2/3 of the calculators is equal to 6/11 of the phones, is to rewrite the two fractions with like NUMERATORS.&lt;br&gt;
2/3 = 6/9&lt;br&gt;
So 6/9 of the calculators is equal to 6/11 of the phones.&lt;br&gt;
That means there are 9 calculators for every 11 phones.&lt;br&gt;
So let the numbers of calculators be 9x and the number of phones be 11x.  The total number of calculators and phones is 260:&lt;br&gt;
9x+11x=260
20x=260
x=13&lt;br&gt;
number of calculators: 9(13)=117
number of phones: 11(13)=143&lt;br&gt;
The profit for selling each calculator is $23.45-$18 = $5.45.&lt;br&gt;
The profit from selling 117 calculators is 117($5.45) = $637.65.&lt;br&gt;
It must be assumed, from the way the problem is presented, that &quot;how much will he earn&quot; is asking for the profit he gets from selling the calculators -- not considering the phones.&lt;br&gt;
ANSWER: $637.65&lt;br&gt;
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