Amy bought a 15-foot spool of string to cut up into wicks for making candles.   If she cuts up the entire string into an equal number of 6-inch and 12-inch wicks, what is the total number of wicks she will have cut?
15 feet of string is 15*12=
<gadget id="calculator">15*12</gadget>
<output>180</output>
180 inches long.
If for every 6-inch wick she also cuts a 12-inch wick, then the pair of wicks are 6+12=
<gadget id="calculator">6+12</gadget>
<output>18</output>
18 inches long.
Thus, in 180 inches of string, she can cut 180/18=
<gadget id="calculator">180/18</gadget>
<output>10</output>
10 pairs of wicks.
10 pairs of wicks are a total of 10*2=
<gadget id="calculator">10*2</gadget>
<output>20</output>
20 wicks.

<result>20</result>