Carina has 130 ounces of coffee divided into 5- and 10-ounce packages. If she has 2 more 5-ounce packages than 10-ounce packages, how many 10-ounce packages does she have?  Choose the correct choice from the following:
A) 5
B) 6
C) 7
D) 8
E) 9
Lets say 5 and 10 ounce packages be x and y respectively.   Given that, 5x+10y=130 and x=y+2. What is the value of y.   Substituting the x in first equation, 5y+10+10y=130 -&gt;y=120/15.= 
<gadget id="calculator">120/15.</gadget>
<output>8</output>
8   8
<result>D</result>
Carina has 130 ounces of coffee divided into 5- and 10-ounce packages. If she has 2 more 5-ounce packages than 10-ounce packages, how many 10-ounce packages does she have?