If '+' means '-', '-' means '÷' and '÷' means '×' and '×' means '+' then find
the value of 30 + 15 - 3 × 2 ÷ 4
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 33
First each sign is replaced by the operation it stands for; the new expression is then worked out with the usual order (division and multiplication before addition and subtraction).
+ becomes −, − becomes ÷, × becomes +, ÷ becomes ×
\(30+15-3\times2\div4\) becomes \(30-15\div3+2\times4\)
\(15\div3=5\) and \(2\times4=8\)
\(30-5+8=33\)