Respuesta :
Answer:
1/10
Step-by-step explanation:
Since 10 people went somewhere over the summer that is 1/2 of the class.
But going over the whole class 2/20 people went to the beach. Simplified that is 1/10
10 people:
2 people visited the beach, 3 people visited a state park, and 5 people flew across the country
20 people:
4 people visited the beach, 6 people visited a state park, and 10 people flew across the country
Answer: 4 students visited the beach