Answer:
B.2/3
Explanation:
Let's work backwards from the information we have to determine which diagram Ronald drew.
We know that after Ronald ate on Tuesday, there was 1/2 of the pizza remaining. This means that he ate 1/2 of the pizza on Tuesday, since he had eaten 1/3 of the pizza on Monday.
So, if we add 1/2 and 1/3, we get:
1/2 + 1/3 = 5/6
This means that Ronald ate 5/6 of the pizza in total. We also know that he ate 1/2 of the pizza on Tuesday, so the fraction he ate on Monday was:
5/6 - 1/2 = 1/3
This confirms that Ronald ate 1/3 of the pizza on Monday.
Now, let's look at the answer choices. We need to find a diagram that represents Ronald eating 1/2 of the pizza, since that's what he ate on Tuesday. The only answer choice that represents 1/2 of the pizza shaded is B. 2/3.
Therefore, Ronald drew diagram B. 2/3.