99. (v16-129-16) 300 g x% li KOH eritmasi bilan 600 g y% li NaOH eritmalari aralashtirildi. Agar hosil bolgan eritmadagi ishqorlarning massa ulushlari yigindisi 0,17 ga teng bolsa, x va Сѓ larni (%) toping. (y% - x% = 3)
A) 22: 25 B)18;21
C)15; 18
D) 12; 15