Riley and francisca's both commute to work. riley's commutes on the train takes 12 minutes more than 1/2 as many minutes as francisco commute by car. it takes riley 36 minutes to get to work. write an equation to determine how many minutes it takes franceska to get to work.

Let’s make Riley equal to X, and since we know that his commute is 36 minutes, we already have part of the equation. Since Riley’s time is half of Francisca’s, then you could say Francisca’s is twice the time of Riley’s. If Riley is X then you can say Francisca is 2X. And we can’t forget that it is also 12 minutes MORE then Francisca’s. So we add 12 to the equation. 2X + 12. Now we solve. We already have X which is 36, so we times that by two which is 72 and add 12 which is 84. So Francisca’s commute to work is 84 minutes.