The total number of flowers in the vase is 13, 4 of these are roses and the rest are daisies, then we can calculate the number of daisies by subtracting 4 from 13, then we get:
Daisises = 13 - 4 = 9
There are 9 daisies and 4 roses in the base, then the ratio of roses to daises can be written like this:
4 : 9
There are 9 daisies from a total of 13 flowers, then we can write the ratio of daisies to flowers to get:
9 : 13