If '+' means '÷', '-' means '+', '×' means '-' and '÷' means '×', then what is the value of the following expression?
24 ÷ 12 - 18 + 9 × 12
Show answer & explanation
Correct answer: C
Explanation
Given symbol substitutions:
• '+' means '÷'
• '-' means '+'
• '×' means '-'
• '÷' means '×'
Original expression:
24 ÷ 12 - 18 + 9 × 12
Replacing the signs with their respective operations:
= 24 × 12 + 18 ÷ 9 - 12
Applying the BODMAS rule:
= 24 × 12 + 2 - 12
= 288 + 2 - 12
= 290 - 12
= 278
Thus, the correct option is (C).