Final answer:
Marcus and his family spent 3/4 of their vacation either with relatives or at the beach, by adding 1/2 for relatives and 1/4 for the beach.
Step-by-step explanation:
Marcus and his family spent 1/2 of their vacation visiting relatives and another 1/4 at the beach. To find out the total fraction of the vacation spent either with relatives or at the beach, we simply add these two fractions together.
Adding the fractions:
- 1/2 of the vacation spent with relatives.
- Plus 1/4 of the vacation spent at the beach.
1/2 + 1/4 = 2/4 + 1/4 = 3/4
Therefore, Marcus and his family spent 3/4 of their vacation time either with relatives or at the beach.