Box A —
Multiple of 11 : 11, 22, 33, 44, 55, …

Box B —
Multiples of 9 : 9, 18, 27, 36, 45, 54, …

11 x 5 + 9 x 6 = 109
(6/11) x 55 + (1 – 4/9) x 54 = 60

Ans : 60 apples.