SOLUTION: Judy has total of 29 coins in her purse in nickels and dimes. If the coins total $2.25, how many of each type of coin does she have? solve by using linear system.

Algebra ->  Linear-equations -> SOLUTION: Judy has total of 29 coins in her purse in nickels and dimes. If the coins total $2.25, how many of each type of coin does she have? solve by using linear system.      Log On


   

Question 1161190: Judy has total of 29 coins in her purse in nickels and dimes. If the coins total $2.25, how many of each type of coin does she have? solve by using linear system.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
system%28n%2Bd=29%2C5n%2B10d=225%29

system%28n%2Bd=29%2Cn%2B2d=45%29
Subtract first equation from second equation, ...