Question

If \(+\) means multiplication, \(-\)means addition, \(÷\) means subtraction and \(\times\) means division, then what is the value of the expression \([18+15+20]\times[(3.2-9.4)÷7.6]?\)

• A. 30
• B. 40
• C. 50
• D. 60

Answer 1

The Correct Option is C

Step 1: Replace the Operators Based on Given Meanings 

We are given that:

• \( + \) means multiplication (\(*\)).
• \( - \) means addition (\(+\)).
• \( \times \) means division (\(/\)).

Rewriting the given expression with correct operations:

\[ \frac{(18 \times 15 \times 20)}{(3.2 + 9.4) \div 7.6} \]

Step 2: Solve Inside the Brackets

First Bracket:

\[ 18 \times 15 \times 20 = 5400 \]

Second Bracket:

\[ 3.2 + 9.4 = 12.6 \]

\[ 12.6 \div 7.6 = 1.65789 \approx 1.66 \]

Step 3: Perform the Division

\[ 5400 \div 108 = 50 \]

Final Answer:

Option (C) 50