What will come in the place of the question mark ‘(?)’ in the following equation, if ‘÷’ and ‘×’ are interchanged and ‘+’ and ‘−’ are interchanged?
20 − 7 ÷ 4 + 20 × 4 = ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 43.
Given equation: 20 − 7 ÷ 4 + 20 × 4 = ?
After interchanging the sign:
20 + 7 × 4 - 20 ÷ 4 = ?
? = 20 + 28 - 5
? = 48 - 5 = 43