# Math

posted by
**Macy**
.

The mean weight of 75 2nd graders is 55.7 lbs and

the mean weight of 25 1st graders is 42.6 lb.

What is the mean weight of the 100 children

posted by
**Macy**
.

The mean weight of 75 2nd graders is 55.7 lbs and

the mean weight of 25 1st graders is 42.6 lb.

What is the mean weight of the 100 children