Final answer:
To find the fraction of children with red or brown hair in Marci's family, we add the fractions of children with red hair and brown hair. The answer is 4/6 or 2/3.
Step-by-step explanation:
- To find the fraction of children that have red or brown hair, we need to add the fractions of children with red hair and brown hair together.
- From the given information, 1/6 of the children have red hair and 1/2 of the children have brown hair.
- Adding these fractions, we get 1/6 + 1/2 = 1/6 + 3/6 = 4/6.
- Therefore, 4/6 or 2/3 of the children have red or brown hair.