Question

What will come in the place of the question mark (?) in the following equation if '-' and 'x' are interchanged and "÷' and "+" are interchanged? 6-8÷12+3×9+3÷17=?

• A. 2
• B. 80
• C. 71
• D. 56

Answer 1

Answer:

B. 80

Given expression:
$6 - 8 \div 12 + 3 \times 9 + 3 \div 17$

Interchange signs

• $( - \leftrightarrow \times )$

• $( \div \leftrightarrow + )$

So expression becomes:
$6 \times 8 + 12 - 3 + 9 - 3 + 17$

Solve step by step

$6\times8=48$

Now substitute:

$48 + 12 - 3 + 9 - 3 + 17$
]

Now calculate stepwise:

• (48 + 12 = 60)

• (60 - 3 = 57)

• (57 + 9 = 66)

• (66 - 3 = 63)

• (63 + 17 = 80)

=80