Maria has a bank containing nickels, dimes and quarters. in all there are 22 coins with a total value of $2.55. The number of dimes is 4 less than the number of nickels and the number of quarters put together. Find the number of nickels, dimes, and quarters in Maria's bank?

my question is: how would i solve this using the steps of word problems (let x=, then, therefore...) this is a three variable systems of equations?

Question

Maria has a bank containing nickels, dimes and quarters. in all there are 22 coins with a total value of $2.55. The number of dimes is 4 less than the number of nickels and the number of quarters put together. Find the number of nickels, dimes, and quarters in Maria's bank?

my question is: how would i solve this using the steps of word problems (let x=, then, therefore...) this is a three variable systems of equations?

anonymous · Answer

if you call the number of nickels $N$ and the number of quarters $Q$ and dimes $D$ then the first line says 
$$D=N+Q-4$$

anonymous · Answer

that gets rid of one of the variables (namely $D$ ) right away

matlee · Answer

Lol i need help with this one too

anonymous · Answer

yeah, my teacher wants us to define the variable or make a chart for *step 2*?

matlee · Answer

Define what variable

anonymous · Answer

nvmd, usually, i use charts to solve these problems

matlee · Answer

Tell me if you need help finding the answer

anonymous · Answer

i know how, but is there a way to set up 3 variable problems using a chart? i get confused on how to set it up.. that's all :(

matlee · Answer

a chart like this ? His equation was right

matlee · Answer

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