Which two numbers should be interchanged to make the following equation correct?
(54 ÷ 18)× 5 + 9 × 2 −45 + 12 × 3 = 57
(Note: Interchange should be done of the entire number and not individual digits of a given number.)
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 18 and 9.
Given equation: (54 ÷ 18) × 5 + 9 × 2 −45 + 12 × 3 = 57
On interchanging the numbers:
(54 ÷ 9) × 5 + 18 × 2 − 45 + 12 × 3 = 57
30 + 36 - 45 + 36 = 57
102 - 45 = 57
57 = 57