James works for 240 minutes. He takes a water break every 20 minutes and a sitting break every 120 minutes. How many more water breaks does he take than sitting breaks?
First find the number of water breaks James takes: 240 minutes / 20 minutes/water break = 
<gadget id="calculator">240/20</gadget>
<output>12</output>
12 water breaks.
Then find the number of sitting breaks James takes: 240 minutes / 120 minutes/sitting break = 
<gadget id="calculator">240/120</gadget>
<output>2</output>
2 sitting breaks.
Then subtract the number of sitting breaks from the number of water breaks to find the difference: 12 breaks - 2 breaks = 
<gadget id="calculator">12-2</gadget>
<output>10</output>
10 breaks.

<result>10</result>