What best describes the legitimacy of the Caste System?

A caste system is a class structure that is determined by birth. Loosely, it means that in some societies, if your parents are poor, you're going to be poor, too. ... The phrase caste system has been around since the 1840's, but we've been using caste since the 1500's.

- Closed, without social mobility

- Based on ascribed status

- Accomplishes the most inequality

Explanation:

I explained it above, there is not much on the "legitimacy" of the caste. But it was VERY legit, as it was used for many many years to rule over people, and many Indians still believe it when discussing the Hindu religion.

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69