Question

If P means addition, Q means subtraction, R means multiplication, and S means division, what is the value of 30P20S5Q4R3?

• A. 38
• B. 40
• C. 22
• D. 28

Answer 1

Answer:

C. 22

1. Substitute the operation letters with mathematical symbols:

   • P $\rightarrow$ $+$

   • S $\rightarrow$ $\div$

   • Q $\rightarrow$ $-$

   • R $\rightarrow$ $\times$

   The equation translates to:
   $30 + 20 \div 5 - 4 \times 3$

2. Apply the BODMAS/PEMDAS order of operations:

   • Division: Solve $20 \div 5 = 4$
     $\rightarrow 30 + 4 - 4 \times 3$

   • Multiplication: Solve $4 \times 3 = 12$
     $\rightarrow 30 + 4 - 12$

   • Addition: Solve $30 + 4 = 34$
     $\rightarrow 34 - 12$

   • Subtraction: Solve $34 - 12 = \mathbf{22}$

Final Answer: 22