40 × ? + (12 + 8) × 3/5 = 1212
Select.
A) 7  B) 5  C) 4  D) 18  E) 30

Rationale: "explanation : = > 40 × ? + ( 12 + 8 ) × 3 / 5 = 1212 = > 40 × ? = 1212 - ( 12 + 8 ) × 3 / 5 = > 40 × ? = 1212 - 20 × 3 / 5 = > 40 × ? = 1212 - 20 × 3 / 5 = 1200 = > ? = 1200 / 40 = 30 answer : option e"
Answer: E