What will come in the place of the question mark (?) in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged?
80 + 18 × 3 ÷ 5 - 23 = ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 73.
80 + 18 × 3 ÷ 5 - 23 = ?
After interchanging signs,
= 80 - (18 ÷ 3)× 5 + 23
= 80 - 6 × 5 + 23
= 80 - 30 + 23
= 103 - 30
= 73.