If × stands for −, ÷ stands for +, + stands for ÷ and − stands for ×, then
15 − 5 ÷ 5 × 20 + 10 is equal to
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 78
Each sign is first replaced by the operation it stands for; the new expression is then worked out by the usual order of operations (BODMAS).
The signs: × is −, ÷ is +, + is ÷, − is ×
15 − 5 ÷ 5 × 20 + 10 becomes \(15\times5+5-20\div10\)
Division and multiplication first: \(75+5-2\)
Result: 78