Original expression:
\[ 15 + 5 - 2 / 6 * 3 \]
Replacing the operators:
\[ 15 \div 5 \times 2 - 6 + 3 \]
First, perform division:
\[ 3 \times 2 - 6 + 3 \]
Next, perform multiplication:
\[ 6 - 6 + 3 \]
Now, perform subtraction and addition:
\[ 0 + 3 = 3 \]
Thus, the correct answer is 3 (Option B).
Arun’s present age in years is 40% of Barun’s. In another few years, Arun’s age will be half of Barun’s. By what percentage will Barun’s age increase during this period?