In a certain alphabet, 11 letters contain a dot and a straight line. 24 letters contain a straight line but do not contain a dot. If that alphabet has 40 letters, all of which contain either a dot or a straight line or both, how many letters contain a dot but do not contain a straight line?  Choose the correct choice from the following answers
A) 5	B) 8	C) 14	D) 20	E) 28
We are told that all of the letters contain either a dot or a straight line or both, which implies that there are no letters without a dot and a line (no line/no dot box = 0).   First we find the total # of letters with lines:  11 +24= 
<gadget id="calculator"> 11 +24</gadget>
<output>35</output>
35;   Next, we find the total # of letters without line:  40 - 35= 
<gadget id="calculator"> 40 - 35</gadget>
<output>5</output>
5;   Finally, we find the # of letters that contain a dot but do not contain a straight line: 5 - 0= 
<gadget id="calculator">5 - 0</gadget>
<output>5</output>
5.   5
<result>A</result>
In a certain alphabet, 11 letters contain a dot and a straight line. 24 letters contain a straight line but do not contain a dot. If that alphabet has 40 letters, all of which contain either a dot or a straight line or both, how many letters contain a dot but do not contain a straight line?