Complex sentence: Cutler worked in his family's concrete construction business, Cutler Bros Concrete, from the age of 11, and began training when he was 18 years old as a senior at Wachusett Regional High School.
Split into simpler sentences: Cutler worked in his family's concrete construction business, Cutler Bros Concrete, from the age of 11. He began training when he was 18 years old as a senior at Wachusett Regional High School.