Answer:
X = 27 bags
Step-by-step explanation:
Given the following data;
Ratio of mulch to fertilizer = 1:6
Quantity of mulch = 4.5 bags
Let the quantity of fertilizer = x
Therefore,
1 mulch = 6 fertilizer
4.5 mulch = x fertilizer
Cross multiplying, we have
x = 6 * 4.5
x = 27
Therefore, if she uses 4.5 bags of mulch, then she should use 27 bags of fertilizer.