Candice and Porter each want to run for president of their school's student body council. In order to do so, they must collect a certain number of signatures and get a nomination. So far, Candice has 21 signatures, and Porter has 18. Candice is collecting signatures at an average rate of 2 per day, whereas Porter is averaging 5 signatures every day. Assuming that their rate of collection stays the same, eventually the two will have collected the same number of signatures. How long will that take? How many signatures will they both have?
In ______ days, Candice and Porter will each have collected ________ signatures.
