What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘–’ are interchanged and ‘×’ and ‘÷’ are interchanged?
2 ÷ 70 × 2 – 30 + 30 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 70.
Given equation: 2 ÷ 70 × 2 – 30 + 30 = ?
On interchanging the signs:
2 × 70 ÷ 2 + 30 - 30 = ?
? = 70 + 30 - 30
? = 100 - 30 = 70