Question

? % of (√144) × 25 + 390 = 453

A 21 Correct Answer Incorrect Answer
B 20 Correct Answer Incorrect Answer
C 25 Correct Answer Incorrect Answer
D 15 Correct Answer Incorrect Answer

Solution

(x/100) x 12 x 25 + 390 = 453 3x = 453 – 390 3x = 63 x = 63/3 x = 21

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