Kayla's son came home from a school party with a bag full of candy. She counted 19 pieces of candy in all. There were twice as many Laffy Taffys than there were chocolate bars. There were 3 more Jolly Ranchers than chocolate bars. How many of each type of candy does he have?
t+c+r = 19
t = 2c
r = c+3
solve for t,c,r (Taffies, Chocos, Ranchers)