Answer:
48% was sold
Step-by-step explanation:
Let the percent sold be x
x/100 * 150 = 72
(This equation basically means...what percentage of 150 bundles will give us 72 bundles remaining? and that's the answer we need)
Simplifying...
150x/100 = 72
3x/2 = 72
3x = 144
x = 48%
