In a class of 25 boys and 20 girls, the mean weight of the boys is 40 kg and the mean weight of the girls is 35 kg. Find the mean weight of the class.
The following are the steps involved in solving the above problem. Arrange them in sequential order.
(A) The total weight of 25 boys `= 25 xx 40 = 1000` kg
The total weight of 20 girls `=20 xx 35 = 700` kg
(B) The mean weight of the class `= (1700)/(45) = 37(7)/(9)`kg
(C) The total weight of 45 students = 1000 kg + 700 kg = 1700 kg

Options

A. ABC
B. ACB
C. BCA
D. CBA

Answer

B

Explanation

ACB is the required sequential order.