What will come in the place of ‘?’ in the following equation, if ‘–’ and ‘÷‘ are interchanged and ‘×’ and ‘+’ are interchanged?
70 ÷ 90 – 10 + 20 × 80 = ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. -30.
Given equation: 70 ÷ 90 – 10 + 20 × 80 = ?
On interchanging the signs:
70 - 90 ÷ 10 × 20 + 80 = ?
? = 70 - 180 + 80
? = 150 - 180 = -30