What will come in the place of ‘?’ in the following equation, if ‘+’ and ‘-‘ are interchanged and ‘×’ and ‘÷’ are interchanged?
49 × 7 - 6 ÷ 8 + 13 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 42.
Given equation: 49 × 7 - 6 ÷ 8 + 13 = ?
After interchanging the signs equation becomes;
(49 ÷ 7) + (6 × 8) - 13 = ?
= 7 + 48 - 13
= 55 - 13 = 42