Question

153.The average age of 30 boys in class and a teacher is 15. If the age of the teacher is 30 year what would be the average age of boys only ? (a) 15 (b) 14 (c) 13 (d) 16

Answer 1

Tolat age of boys= (31*15)-30

=465-30=435yrs

Then Average age of boys=

435/30=14.5yrs