SOLUTION: A piggybank has a total of 30 coins made up of nickels and dimes. The total value of the piggybank's contents is $2.40. Let x represent the number of nickels.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A piggybank has a total of 30 coins made up of nickels and dimes. The total value of the piggybank's contents is $2.40. Let x represent the number of nickels.      Log On


   

Question 105933: A piggybank has a total of 30 coins made up of nickels and dimes. The total value of the piggybank's contents is $2.40. Let x represent the number of nickels.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
so 30-x=dimes

5x+10(30-x)=240