The average age of 5 boys is 13 years. One more
joins them and the average age becomes 12 year
Find the age of the boy who joins.
Answers
Answered by
0
Answer:
Explanation:
We know Average ( Avg )
=> Avg = Net total / number
A.T.Q.
=>( Sum of ages of 5 boys ) / 5 =13
=> Sum of ages of 5 boys = 13 × 5
=> Sum of ages of 5 boys = 65
____________________
# Now a boy is added of age ( x ) and average becomes 12
=> Total sum of ages / no = 12
=> ( Sum of ages of 5 boys + sixth boy )/ 6 = 12
=> ( 65 + x ) / 6 = 12
=> 65 + x = 72
=> x = 72 - 65
=> x = 7 years
# Age of sixth boy is 7 years
Answered by
0
Answer:
7
Explanation:
total age of 5 boys. 5x13=65
total age of 6 boys. 6x12=72
required answer
=(72-65)
=7
Similar questions