If the average mark of 15 students is 60 and the average mark of another 10 students is 70, then find the average mark of 25 students.
The following are the steps involved in solving the above problem. Arrange them in sequential order.
(A) Average marks of 25 students `= (1600)/(25) = 64`
(B) The total marks of 15 students `= 15 xx 60 = 900`
The total marks of 10 students `= 10 xx 70 = 700`
(C) The total marks of 25 students = 900 + 700 = 1600

Options

A. BCA
B. BAC
C. CBA
D. CAB

Answer

A

Explanation

BCA is the required sequential order.