28 √(?)+1426=3/4 of 2872 · ABC26GN1377

Subject: General Aptitude · Chapter: Square Roots and Cube Roots

$28 \sqrt{?}+1426=\frac{3}{4}$ of 2872

(a)576

(b)676

(c)1296

(d)1444

Answer

Answer (as printed): B

Explanation

Let $28 \sqrt{x}+1426=3 \times 718$. Then, $28 \sqrt{x}=2154-1426 \Leftrightarrow 28 \sqrt{x}=728 \Leftrightarrow \sqrt{x}=26$ $$\Leftrightarrow x=(26)^{2}=676 .$$

Explanation as extracted from the printed page; notation may be imperfect.

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