Answer:
6l + 6r = 108
Explanation:
We have that, total number of lilies used = 30 and total number of roses used = 78.
So, the total number of flowers are = 30 + 78 = 108
Let, l = number of lilies in one arrangement and r = number of roses in one arrangement.
Since, it is required to make 6 identical arrangements.
So, number of lilies in 6 arrangements = 6l and number of roses in 6 arrangements = 6r
Thus, we get the relation between lilies and roses as 6l + 6r = 108.