Question

In aid of charity, every student in a class contributes as many rupees as the number of students in that class. With the additional contribution of Rs.2 by one student only, the total collection is Rs. 443. Then how many students are there in the class?
(a) 12 

(b) 21 

(c) 43 

(d) 45

Answer 1

(b) Let the number of students in the class be x. 

Total collection without considering the
additional contribution by one student = 443 – 2 = Rs.441