Question

Choose the correct answer from the alternatives given :
If - means +, + means -. $\times$ means $÷$ and $÷$ means $\times$, then which of the following equation is correct?

• A. $30-5+4$ $÷$ $10\times$ $5=62$
• B. $30+5$ $÷$ $4-10$ $\times$ $5=22$
• C. $30+5-4$ $÷$ $10\times$ $5=28$
• D. $30$ $\times$ $5-4$ $÷$ $10+5=41$

Answer 1

The correct option is D $30$ $\times$ $5-4$ $÷$ $10+5=41$

From option (4).
$30\times 5$ $-4÷10$ $+5=41$
After interchanging the signs,
$=30÷5$ $+4\times$ $10-5$
$=6+4$ $\times$ $10-5=6+40-5$
$=(6+40)-5$
$=41$
LHS = RHS