800 chocolates were distributed among the students of a class. East student got twice as many chocolates as the number of students in the class. The number of students in the class was :

(1) 25 (2) 30 (3) 35 (4) 20

Solution:

Let the number of students be n.

So, each of n students got 2n chocolates

Total no. of chocolates

= (2n)*n = 800

⇒ 2n² =800

⇒ n²=400

⇒ n=20

Then the option is (4)