Question

year. The average age of 10 children is 6 years 6 months. If the average age of 9 children is 6 years 2 months, find the age of the 10th child. ​

Answer 1

Answer:

9year6months✅

Step-by-step explanation:

avg of 10 children = 6years 6 months

= 78months

sum of 10 children = 78×10= 780

avg of 9 children = 6years 2 month's

= 74 months

sum of 9 children = 74×9= 666

10th child age = 780-666

= 114 months

= 9years 6months