Correct option is C
Given: 30 × 6 ÷ 15 + 7 + 40 = 50
As per the question
Interchange the 15, and 30
15 × 6 ÷ 30 + 7 + 40 = 50
Following the BODMAS rule (Bracket, Orders (i.e. powers and square roots, etc.), Division and Multiplication, Addition and Subtraction):
1. Division (÷): 15 × + 7 + 40
2. Multiplication (×): 3 + 7 + 40
3. Addition (+): 50
Correct answer is (c) 15, 30.