state gov OSSSC RI, ARI, AMIN, SFS, ICDS Supervisor Combined Mock Test 2023-25 Quantitative Aptitude Average
The average age of 25 boys is 15 years. If the average ages of the first and the last 12 boys are 14.5 years and 15.5 years respectively, what is the age of the thirteenth boy?
1
10
2
12
3
15
4
16