Question

Mrs Gonzalez has three children whose names are Javier Juan and Rosa. Their mean age is 11 .The median age is 10 .Rosa is 15 years old .What is the age of the youngest child?

Answer 1

Answer:

  8

Step-by-step explanation:

Since there are 3 (an odd number) ages, the median is the middle one. So, we know two of the ages are 10 and 15. In order for the mean of the three ages to be 11, their total must be 33. The total of the two known ages is 25, so the remaining one must be ...

  33 -25 = 8

The youngest child is 8.