What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘–’ are interchanged and ‘×’ and ‘÷’ are interchanged?
25 – 45 × 9 ÷ 5 + 20 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 30.
Given equation: 25 – 45 × 9 ÷ 5 + 20 = ?
On interchanging the signs:
25 + 45 ÷ 9 × 5 - 20 = ?
? = 25 + 25 - 20
? = 50 - 20 = 30