Question

After McKinley was assassinated, Roosevelt became the youngest president in American history. How old was he? 40 42 43 45

Answer 1

Roosevelt became the youngest president in American history at the age of 42.

Answer 2

The youngest person to assume the office was Theodore Roosevelt, who became president at the age of 42 years, 322 days, following William McKinley's assassination; the oldest was Donald Trump, who was 70 years, 220 days old at his inauguration.