. . ● . ● 5% 4%. ● . ● . : ● 4 8 . ● 250 300 . ● . ● . ● . ● . ● . ● 25 . ● 97% . ● 10% . ● ߡ . ● 5 7 . ● . ● . ● . ● . ● . ● 5% 25 . ● . ● . ● . ● . ● . ● . ● . ● . ● . ● . ● . ● . ● 55 75 4 . ● 6 8 55 60 . ● 30 52 .