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 = ?

Question

Accepted Answer

85. After swapping + with – and × with ÷, the equation becomes: 80 – 18 ÷ 3 × 5 + 23. Solving: 18 ÷ 3 = 6, then 6 × 5 = 30, so 80 – 30 + 23 = 73. Wait — rechecking: 80 – 30 + 23 = 73. The answer is 73, option (a).

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 = ?

Explanation

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