If + means ×, ÷ means -, - means +, and × means ÷ then, what is (160 ÷ 20 - 5) + 4 × 8?
Show answer & explanation
Correct answer: D
Explanation
Given symbol substitutions:
• + means ×
• ÷ means −
• − means +
• × means ÷
The given expression is:
(160 ÷ 20 − 5) + 4 × 8
Replacing the symbols with their new meanings:
= (160 − 20 + 5) × 4 ÷ 8
Applying the BODMAS rule:
1. Solve the bracket first:
(160 − 20 + 5) = 140 + 5 = 145
2. Perform division and multiplication:
= 145 × 4 ÷ 8
= 145 × 0.5
= 72.5
Therefore, the correct answer is 72.5.