Here are 3 tasks. Keyboard input: you will need to enter one or several values as the answer.
The timer does not affect your place in the solved players list, it only helps you track your pace.
Question 1
Enter your answer here
Question 2
The son is one-third the age of his father. However, five years ago, he was exactly one-fourth the age of his father. Enter the current ages of the son and father, separated by a comma.