Final answer:
The simplified sum of 8/15 and 5/12 when working with a part-whole relationship is 57/60.
Step-by-step explanation:
To determine the simplified sum of
8/15 and 5/12 when working with a part-whole relationship, we need to find a common denominator.
The least common multiple of 15 and 12 is 60. We can convert both fractions so that they have a denominator of 60.
8/15 becomes 32/60, and 5/12 becomes 25/60.
Now, we can add the numerators: 32 + 25 = 57.
Therefore, the simplified sum of 8/15 and 5/12 is 57/60.