Question:
The average number of sweets distributed in a class of 60 students is 5. If ‘x’ number of students newly joined the class and the average becomes 4, and then find the newly joined students in the class?
A12
B14
C15
D18
Answer:
C. 15
Explanation:
Let newly joined students be x, 60*5 = (60 + x)*4 300 = 240 + 4x 60 = 4x x= 15