Question 463418
(14 * 89 + 21 * x )/(14 + 21) = 92
(1246 + 21x)/35 = 92
1246 + 21x = 92 * 35
1246 + 21x = 3220
21x = 3220 - 1246
21x = 1974
x = 1974/21 = 94


so, the girls' average score is 94