state gov OSSSC RI, ARI, AMIN, SFS, ICDS Supervisor Combined Mock Test 2023-25 Quantitative Aptitude Average
If the average age of 20 students in Class I is 10 years and the average age of 25 students in Class II is 12 years, find the average age (in years) of all students.
A. 11
B. 11.111
C. 10.50
D. 10.85
1
D
2
B
3
A
4
C