algebra
posted by paige .
brad wants to buy flowers for his friend with 27 $ . the daises are $1 each and the roses are $3 each. he buys 3 more daises then roses. how much did the roses cost?

D  R = 3
Therefore, D = R + 3
D + 3R = 27
R + 3 + 3R = 27
4R = 24
You should be able to take it from here.