help quick absolute value question

1. Let $a_1, a_2, a_3$be real numbers such that$|a_1 - a_2| + |a_2 - a_3| + |a_3 - a_1| = 100.$
What is the largest possible value of $|a_1 - a_2|?$

2. Let $a_1,a_2,a_3,\dots,a_{10}$ be real numbers such that$|a_1 - a_2| + |a_2 - a_3| + |a_3 - a_1| = 100.$
What is the largest possible value of $|a_1 - a_2|?$