a + b means a – b; a – b means a x b; a x b means a ÷ b; a ÷ b; means a + b, then what is the value of 10 + 30 – 100 x 50 ÷ 25? (Operations are to be replaced simultaneously)

Question

Accepted Answer

The correct answer is option D. First, replace the mathematical operations in the given expression according to the provided rules:
Original expression: 10 + 30 – 100 x 50 ÷ 25

Applying the rules:
-   '+' becomes '–'
-   '–' becomes 'x'
-   'x' becomes '÷'
-   '÷' becomes '+'

The transformed expression is: 10 – 30 x 100 ÷ 50 + 25

Now, follow the standard order of operations (BODMAS/PEMDAS):
1.  **Division**: 100 ÷ 50 = 2
    The expression becomes: 10 – 30 x 2 + 25
2.  **Multiplication**: 30 x 2 = 60
    The expression becomes: 10 – 60 + 25
3.  **Addition and Subtraction** (from left to right):
    10 – 60 = -50
    -50 + 25 = -25

The value of the expression is -25. This question tests logical reasoning by reinterpreting mathematical operations.

Q75. a + b means a – b; a – b means a x b; a x b means a ÷ b; a ÷ b; means a + b, then what is the value of 10 + 30 – 100 x 50 ÷ 25? (Operations are to be replaced simultaneously)

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