Question

The+average+age+of+6+students+is+11+years.+If+two+more+students+of+age+14+and+16+years+old+join+their+average+will+become.
1.+13+years+
2.+12+years+l
3.+12+:1/2+years
4.+11:1/2

Answer 1

Answer:

Avg age of 6 students =11 years.

Sum of their ages= 11×6=66

2 more student are joined aged 14 and 16

therefore, new avg will be

(new sum of ages)/( no of students)

(66+14+16)/(6+2)

96/8

12.

ans