BagB
4/35 = 2*3*4/15*14
G = 3 , B = 4 , R=3 , Y=5

Bag A
x/14*(x-1)/13*(8-x)/12 = 5/182
x = 2 or 5 , .. 5 satisfy
x = 5 = R , B = 4 , G=2 , Y = 3

Green in C = yellow in D = y
5/14*3/15*5/(17+y)*2/12+y = 5/7*594
y^2 + 29y - 390 = 0
y = 10
Bag C
R=5 , B=8 , G = 10 , Y = 4
BagD
R= 2 , B = 4 , G = 6 , Y = 10

10*4*2/27*26 = 40/351 , e=40
2*6*10/22*21 = 20/77 , f=20

e - f = 20

Photo from S Krishna Reddy

Let no. xy

Total possible nos = 9*8 = 72

Given that

3(10x + y) < (10y + x)

29x/7 < y

x = 1, y = 5, 6, 7, 8, 9

x = 2, y = 9

Nos = 15, 16, 17, 18, 19, 29

6/72

1/12