SOLUTION: Please solve this question, The average of 4 numbers is 10.5. if the average of 3 of them is 9. what is the 4th number ? Regards Raza

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Please solve this question, The average of 4 numbers is 10.5. if the average of 3 of them is 9. what is the 4th number ? Regards Raza      Log On