Which two numbers should be interchanged to make the given equation correct?
9 × (34 – 15) + (105 ÷ 7) + 28 + (13 × 4) = 218
(Note: Interchange should be done of entire number and not individual digits of a given number)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 34 and 28.
Given equation: 9 × (34 – 15) + (105 ÷ 7) + 28 + (13 × 4) = 218
After interchanging two signs:
9 × (28 – 15) + (105 ÷ 7) + 34 + (13 × 4) = 218
9 × 13 + 15 + 34 + 52 = 218
117 + 101 = 218
218 = 218