Question

Helen purchased three times as many carnations as roses. If roses cost $1 each, and carnations cost 50% each, and she spent a total of $7.50 for the flowers, how many roses did she purchase?

Answer 1

c = 3r

r + .50c = 7.50

r + 1.50r = 7.50

2.50r = 7.50

r = 3, c = 9

3 roses, 9 carnations