A teacher distributes chocolates in three classes A, B and C. In C, each student got 3 chocolates. In class B each student got 2 chocolates. In class A, 3 students did not get any chocolate and rest got one chocolate each. Average number of students in B and C were 48. If the chocolates distributed in class A and B were equal, which of the following cannot be the value of the total number of chocolates distributed in the three classes?
A teacher distributes chocolates in three classes A, B and C. In C, each student got 3 chocolates. In class B each student got 2 chocolates. In class A, 3 students did not get any chocolate and rest got one chocolate each. Average number of students in B and C were 48. If the chocolates distributed in class A and B were equal, which of the following cannot be the value of the total number of chocolates distributed in the three classes? Correct Answer 287
Given:
In C, each student got 3 chocolates. In class B each student got 2 chocolates. In class A, 3 students did not get any chocolate and rest got one chocolate each. Average number of students in B and C were 48. The chocolates distributed in class A and B were equal.
Formula Used:
average = sum of terms/number of terms
Calculation:
Let the number of students in A, B and C be ‘a’, ‘b’ and ‘c’ respectively.
⇒ Number of chocolates in A = (a - 3) × 1 = a - 3
Also, average number of students in B and C = (b + c)/2 = 48
⇒ b + c = 96; c = 96 - b
Total number of chocolates in all class = (a - 3) × 1 + b × 2 + (96 - b) × 3
⇒ a – b + 285
Also, the chocolates distributed in class A and B were equal.
⇒ a – 3 = 2b
⇒ a = 3 + 2b
Total number of chocolates = a – b + 285 = 3 + 2b – b + 285 = b + 288
Minimum of 288 chocolates were distributed.