Answer: he bought 72 ounces of blueberries.
Step-by-step explanation:
Let x represent the number of ounces of blueberries that Wayne bought.
He used 3/8 of the blueberries to make blueberry bread. This means that the amount of blueberries that he used to make blueberry bread is 3x/8 ounces
He used 1/6 of the blueberries to make pancakes. This means that the amount of blueberries that he used to make pancakes is x/6 ounces.
He used 5/12 of the blueberries to make jam. This means that the amount of blueberries that he used to make jam is 5x/12 ounces. The total amount of blueberries used is
3x/8 + x/6 + 5x/12 = 46x/48
If Wayne uses 69 ounces of blueberries he bought, it means that
46x/48 = 69
46x = 48 × 69 = 3312
x = 3312/46
x = 72 ounces
