If + means -, ÷ means +, - means ×, and × means ÷ then, what is (80 ÷ 10 - 5) × 4 + 20?
Show answer & explanation
Correct answer: C
Explanation
+ means −
÷ means +
− means ×
× means ÷
(80 ÷10−5) × 4 + 20
Switching signs:
(80 + 10 × 5) ÷ 4 − 20
Now according to BODMAS:
80 + 50 = 130
130 ÷ 4 = 32.5
32.5 − 20 = 12.5
Correct answer: 12.5