If "p" means "×", "q" means "+", "r" means "÷", and "s" means "−", then 17 p 16 r 4 s 8 q 9 =

Explanation

Replace the symbols according to the question: p = ×, q = +, r = ÷ and s = −. Thus 17 p 16 r 4 s 8 q 9 = 17 × 16 ÷ 4 − 8 + 9. Applying normal precedence gives 17 × 4 − 8 + 9 = 68 − 8 + 9 = 69.