Riding Rookies

Question

A sign with a brown horse on it.

Last year, the 8 kids in a beginner's horseback-riding group were 7, 9, and 10 years old. The mode of the ages was 10, and the mean was 9. There were equal numbers of 7-year-olds and 9-year-olds.

This year the group has stayed together.

How old are the children now, and how many are there of each age?



Houghton Mifflin Math Grade 6