Joe needs to paint all the airplane hangars at the airport, so he buys 360 gallons of paint to do the job. During the first week, he uses 1/9 of all the paint. During the second week, he uses 1/5 of the remaining paint. How many gallons of paint has Joe used? Choose the correct choice:
A) 18
B) 144
C) 104
D) 216
E) 250
Total paint initially = 360 gallons   Paint used in the first week = (1/9)*360= 
<gadget id="calculator">(1/9)*360</gadget>
<output>40</output>
40 gallons.   Remaning paint= 320 gallons   Paint used in the second week = (1/5)*320= 
<gadget id="calculator">(1/5)*320</gadget>
<output>64</output>
64 gallons   Total paint used= 104 gallons.   Option 104
<result>C</result>
Joe needs to paint all the airplane hangars at the airport, so he buys 360 gallons of paint to do the job. During the first week, he uses 1/9 of all the paint. During the second week, he uses 1/5 of the remaining paint. How many gallons of paint has Joe used?