What will come in the place of the question mark(?) in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged?
162 × 9 - 452 + 7 ÷ 9 =?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 407.
Given conditions: '+' and '-' are interchanged and '×' and '÷' are interchanged
Given equation: 162 × 9 - 452 + 7 ÷ 9 =?
After interchanging the expression becomes:
= 162 ÷ 9 + 452 - 7 × 9
= 18 + 452 - 7 × 9
= 18 + 452 - 63
= 470 - 63
= 407
Hence, 407 is the correct answer.