Sun	Mon	Tue	Wed	Thu	Fri	Sat
23	24	25	26	27	28	1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31	1	2	3	4	5

Back to Main Page

Multiple Choice Questions

The average age of 30 boys in a class is 15years One boy aged 20yrs left the class but the two new b...........

Quantitative Aptitude(IBPS RRB PO) Average

The average age of 30 boys in a class is 15years. One boy aged 20yrs left the class, but the two new boy came in of his place, the difference of their ages was 5yrs. Now If the average age of all the boys in the class still remains 15yrs. Then find the age of the younger newcomer?

10yrs

20yrs

15yrs

8yrs

छोटे Courses बड़े Results

Master Average

Prepare through Micro-courses

Try Now

Explanation:

Solution:
one boy aged 20yrs left the class. If the total age was 30(15*2) of the two boys who came in, then there were no change in the average.
But the boy left took away five more out of average. So now total = 30+5=35.
X+X+5=35
X=15.

Report error

Submit Error