human
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?
assistant
How long is the string? ** 15 feet of string is 15*12=<<15*12=180>>180 inches long.
How long are the pair of wicks? ** If for every 6-inch wick she also cuts a 12-inch wick, then the pair of wicks are 6+12=<<6+12=18>>18 inches long.
How many pairs of wicks can she cut? ** Thus, in 180 inches of string, she can cut 180/18=<<180/18=10>>10 pairs of wicks.
How many wicks are there in total? ** 10 pairs of wicks are a total of 10*2=<<10*2=20>>20 wicks
#### 20