Multiple choice

If + means *, * means -, / means +, and - means /, then find the value of the expression: 150 / 30 + 4 - 2 * 10 = ?

  1. 180

  2. 200

  3. 190

  4. 210

  5. 175
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B Correct answer
Explanation

Replace operators: 150 + 30 * 4 / 2 - 10. Using BODMAS: 150 + (30 * 4 / 2) - 10 = 150 + 60 - 10 = 200.

AI explanation

Using the sign substitution method, we replace the symbols in the original expression with their new meanings to get 150 + 30 multiplied by 4 divided by 2 minus 10. Applying the BODMAS rule for the new operators, we perform multiplication and division before addition and subtraction. This gives us 150 + (30 multiplied by 4 divided by 2) minus 10, which becomes 150 + (120 divided by 2) minus 10. Solving the bracket gives 60, so the equation simplifies to 150 + 60 - 10, resulting in 200.

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