Subject: General Aptitude · Chapter: Square Roots and Cube Roots · Exam: 2006 · Marks: · Difficulty:
1250 oranges were distributed among a group of girls of a class. Each girl got twice as many oranges as the number of girls in that group. The number of girls in the group was
(a)25
(b)45
(c)50
(d)100
Answer
Answer (as printed): A
Explanation
Let the number of girls in the group be $x$. Then, number of oranges given to each girl $=2 x$. $$\therefore x \times 2 x=1250 \Leftrightarrow 2 x^{2}=1250 \Leftrightarrow x^{2}=625 \Leftrightarrow x=\sqrt{625}=25 .$$
Explanation as extracted from the printed page; notation may be imperfect.