Answer:
~20 oz
Step-by-step explanation:
Originally, Bo had 32 ounces of flour, which is around 30 ounces. Then, he added in 47 ounces, which is about 50. So, now the new total is about 30 + 50 = 80 ounces.
During the week, he used up some of those ~80 ounces of flour. He used up enough so that at the end of the week, there was only 61 ounces, or approximately 60 oz, left. The difference between these two numbers must be how much Bo used:
80 - 60 = 20 ounces
Thus, the answer is about 20 ounces.
Hope this helps!