What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?
342 × 18 + 79 − 45 ÷ 3 = ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 75.
Given equation: 342 × 18 + 79 − 45 ÷ 3 = ?
If ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged:
342 ÷ 18 - 79 + 45 × 3 = ?
? = 19 - 79 + 45 × 3 ⇒ ? = 19 - 79 + 135 = 75