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This problem trains for: SAT-I, AMC-8, GMAT.

Two sisters have saved this year, on average, 3,000 dollars. Their three older brothers have saved this year an average of 27,000 dollars. Their two parents and two grandmothers have saved an average of 64,000 dollars. What has been the average annual saving for a member of this family?

The total sum saved by the sisters:

equation

The total sum saved by the brothers:

equation

The total sum saved by the parents and grandmothers:

equation

The total sum saved by the family:

equation

The total number of members in the family is 9.

The average per member of family is:

equation dollars.