Incorrect
Explanation
Diana is 16, so her brother is 4. She is 12 years older, so she needs to be 24 to be two times older than her 12-year-old brother.
Solve this puzzle
Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation.
3+4=25 3+4=5+2 32=4+5 32=45