SOLUTION: Your piggy bank has 50 coins worth a total of $4.55. The coins are only nickels and dimes. How many coins are nickels, how many are dimes?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Your piggy bank has 50 coins worth a total of $4.55. The coins are only nickels and dimes. How many coins are nickels, how many are dimes?       Log On


   

Question 1103161: Your piggy bank has 50 coins worth a total of $4.55. The coins are only nickels and dimes.
How many coins are nickels, how many are dimes?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.N%2BD=50
.
.
.
5N%2B10D=455
2.N%2B2D=91
Subtract eq. 1 from eq. 2,
N%2B2D-N-D=91-50
D=91-50
Solve for D then use either equation to solve for N.