Michelle wants the ratio of daisies to carnations to be 4 to 2. This means that for every 6 flowers planted, 4 are daisies, or of the flowers are daisies.
Let d equal the total number of daisies. Then, d out of 42 of the flowers planted are daisies.
To find d, set up the following proportion and solve.
Therefore, Michelle should plant 28 daisies.