The average age of 5 children is 10 years. If two more children of ages 11 years and 16 years join, then what will be the new average age?
Answer & explanation
Correct answer: option 1
Sum of age of 5 children = 5 × 10 = 50 years
Two new children joined them ,
New Average = \(\frac{50 + 11 + 16 }{7}\) = \(\frac{77}{7}\)
= 11 years