If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘–’, what will come in place of the question mark (?) in the following equation?
70 D 11 B 5 C 45 A 9 = ?
Correct Answer :
20
Solution :
The correct answer is 20.
To find the value that comes in place of the question mark (?), we need to substitute the given symbols with their corresponding mathematical operators:
• A stands for division (÷)
• B stands for multiplication (×)
• C stands for addition (+)
• D stands for subtraction (–)
Given Equation:
70 D 11 B 5 C 45 A 9 = ?
Step 1: Replace the symbols with mathematical operators.
70 – 11 × 5 + 45 ÷ 9 = ?
Step 2: Apply the BODMAS / PEMDAS rule (Division and Multiplication first from left to right, followed by Addition and Subtraction).
First, perform the division:
Now, substitute this back into the equation:
70 – 11 × 5 + 5 = ?
Next, perform the multiplication:
Now, substitute this back into the equation:
70 – 55 + 5 = ?
Step 3: Perform addition and subtraction from left to right.
Subtract 55 from 70:
Finally, add 5:
Therefore, the value that replaces the question mark (?) is 20.
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