Aaron0620
Your piggy bank has a total of 43 coins in it; some are dimes and some are nickels. If you have a total of $3.60, how many dimes do you have?



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Mathhelp346
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so you know you have 43 coins. An equation for that would be n+d=43

lgbasallote
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you take this one @Mathhelp346 ^_^

Mathhelp346
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nvm the second equation should be 10d+5n=160

Aaron0620
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26 x 17 =3.60 im close... 3.45

Mathhelp346
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then you would solve for either d or n in the first equation. i'm going to do n. you would subtract d from both sides, leaving you with n=43d

Mathhelp346
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you would sub n into the second equation and solve

Mathhelp346
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do you know what to do from here?

Aaron0620
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29 dimes and 14 nickles.

Mathhelp346
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i don't think that's right...

Aaron0620
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right?

Mathhelp346
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that would add up to 360. you need 160

Aaron0620
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no the question is asking $3.60

Mathhelp346
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oh my bad. your answer is right.