1、As is shown in the picture, two ants are walking along the

1、As is shown in the picture, two ants are walking along the side of a standard triangle;
1、As is shown in the picture, two ants are walking along the side of a standard
triangle; they start at the same time from Point A and Point B to Point C. Ant A
waik along the side clock wisely(顺时针)by 1cm per second; AntB get back when meet
Point A or C by 1.8cm per second. How long will Anta and B meet each other for
the first fime?