Sara weighs 3/4 of her brother's weight, minus 12 pounds. What is her brother's weight? What is Sara's weight?

Question

This problem is found on page 50 of the Geometry Around You worksheet. Although the problem itself has nothing to do with geometry, it is still part of the assignment

Answer 1

Let us assume her brother's weight is x pounds

Then Sara's weight is (3*x)/4 - 12

 

There is something missing in this problem. There is one unknown (x) but no equation that will let you determine the unknown x.