If + means ×, − means ÷, × means −, and ÷ means +, what will be the value of the following expression?
9 + 7 × 15 – 5 ÷ 5 = ?

The correct answer is 65 (Option 4).

Step 1: Understand the operator substitutions
According to the given rules, we need to substitute the operations as follows:

• + means × (multiplication)
• − means ÷ (division)
• × means − (subtraction)
• ÷ means + (addition)

Step 2: Rewrite the given expression
The original expression is:

$9+7\times 15-5÷5$

Replacing the operators with their new meanings gives:

$9\times 7-15÷5+5$

Step 3: Evaluate using BODMAS / PEMDAS rule
We follow the standard order of operations: Division and Multiplication first (from left to right), followed by Addition and Subtraction.

1. Perform division ($15÷5$):

$15÷5=3$

The expression becomes:

$9\times 7-3+5$

2. Perform multiplication ($9\times 7$):

$9\times 7=63$

The expression becomes:

$63-3+5$

3. Perform addition and subtraction from left to right:

$63-3=60$

$60+5=65$

Thus, the final value of the expression is 65.