Which two signs should be interchanged to make the given equation correct?
200 + 180 ÷ 12 × 9 ̶ 55 = 120
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. + and -.
200 + 180 ÷ 12 × 9 ̶ 55 = 120
After interchanging signs,
200 - (180 ÷ 12) × 9 + 55 = 120
200 - 15 × 9 + 55 = 120
200 - 135 + 55 = 120
255 - 135 = 120
120 = 120.