Five percent of the 300 senior students got a full merit college scholarship and ten percent of them got a half merit scholarship. How many senior students did not get any scholarships?
300 x 5/100 = 
<gadget id="calculator">300*5/100</gadget>
<output>15</output>
15 senior students got a full merit scholarship.
300 x 10/100 = 
<gadget id="calculator">300*10/100</gadget>
<output>30</output>
30 senior students got a half merit scholarship.
So, a total of 15 + 30 = 
<gadget id="calculator">15+30</gadget>
<output>45</output>
45 students got scholarships.
Therefore, 300 - 45 = 
<gadget id="calculator">300-45</gadget>
<output>255</output>
255 senior students did not get any scholarships.

<result>255</result>