SOLUTION: Diana has been saving nickels and dimes. She opened up her piggy bank and determined that it contained 48 coins worth $4.50. Determine how many nickels and dimes were in the piggy
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Question 395538: Diana has been saving nickels and dimes. She opened up her piggy bank and determined that it contained 48 coins worth $4.50. Determine how many nickels and dimes were in the piggy bank. Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! Diana has been saving nickels and dimes. She opened up her piggy bank and determined that it contained 48 coins worth $4.50. Determine how many nickels and dimes were in the piggy bank.
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nickels -----x
dimes -------y
x+y = 48........................1
..
5x+10y=450......................2
multiply (1) by -5
-5x-5y=-240
add this to (2)
5y=210
/5
y=42 dimes
..
48-42= 6 nickels
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m.ananth@hotmail.ca
