For arranging a picnic, each student contributed an amount equal to the number of students while the teacher contributed an amount equal to twice the number of students. However, if each student would have contributed an amount equal to twice the number of students and the teacher would have contributed an amount equal to the number of students, they would have generated Rs. 1056 more. Find the number of students in the group?	Choose the most appropriate option.
A) 54
B) 56
C) 33
D) 18
E) 19
Explanation:   Let the number of students = x. Thus, we get,   [(2x2 + x) – (x2 + 2x)] = 1056   x2 - x - 1056 = 0   Solving the equation, we get, x = 33 or x = - 32.   Since the number of students are to be positive, number of students = x = 33   ANSWER: 18
<result>D</result>
For arranging a picnic, each student contributed an amount equal to the number of students while the teacher contributed an amount equal to twice the number of students. However, if each student would have contributed an amount equal to twice the number of students and the teacher would have contributed an amount equal to the number of students, they would have generated Rs. 1056 more. Find the number of students in the group?