If 'P' means '+', 'Q' means '÷', 'R' means '−' and 'S' means '×', then 15 P 20 R 10 Q 5 S 2 = ?
Show answer & explanation
Correct answer: D
Explanation
P = +
Q = ÷
R = −
S = ×
15 P 20 R 10 Q 5 S 2
Switching the symbols:
15+20−10÷5×2=?
15+20−2×2=?
15+20−4=?
? = 31