Henry ate 3/8 of a pizza for lunch. For din/ner, he ate 2/3 of what was left from lunch. How much of the whole pizza did he eat for dinner?

To find out how much of the whole pizza Henry ate for dinner, we need to calculate the amount he had left after lunch.

If Henry ate 3/8 of the pizza for lunch, then the fraction of the pizza left after lunch is 1 - 3/8 = 5/8.

Now, Henry ate 2/3 of what was left after lunch for dinner. So, calculate 2/3 * 5/8 = 10/24 = 5/12.

Therefore, Henry ate 5/12 of the whole pizza for dinner.