If (22 + 4)2 × (3 - 5) + 20% of 400 + x% of 30 = 30% of 30, find the value of x.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 190.
By using the BODMAS rule:
(22 + 4)2 × (3 - 5) + 20% of 400 + x% of 30 = 30% of 30
⇒ (64) × (-2) + (20/100 × 400) + x% of 30 = 30/100 × 30
⇒ -128 + 80 + x% of 30 = 9
⇒ x% of 30 = 9 + 48
⇒ (x/100) × 30 = 57
x = 190