10 + 6 ÷ 3 + 2 × 8
28
18
12
24
As we know, order of operation of BODMAS is as follows
Brackets
Of
Division
Multiplication
Addition
Subtraction
= 10 + 2 + 2 × 8
= 10 +2 +16
= 28
If A:B = 12:38, B:C = 13:59 and C:D = 56:34, then the ratio A:B:C:D is