30 country albums because if you divide 45 by 3 you get 15 which is 1/3 of the whole thing. Add another 15 and you get 30 which is 2/3 of it.
Commutative property of addition states that a + b = b + a
so ur answer is C
About 127.156 its not exact but instead of 2850 miles i used 2849.52 miles so tell me if thats fine