Question

What will come in the place of "?' in the following equation, if '+' and '-' are interchanged and 'x' and '÷' are interchanged? 39 ÷ 3 - 24 + 60 × 12 = ?

• A. 163
• B. 86
• C. 136
• D. 190

Answer 1

Answer:

C. 136

We are given the expression:

$39 ÷ 3 - 24 + 60 × 12$

Interchange the operators

• ‘+’ ↔ ‘−’

• ‘×’ ↔ ‘÷’

So the modified expression becomes:

$39 × 3 + 24 - 60 ÷ 12$

Apply BODMAS

$39 × 3 = 117$

$60 ÷ 12 = 5$

Now substitute:
$117 + 24 - 5$
= 136