SOLUTION: I worked for a while just trying to find a good formula for this problem and all the ones i found and ennded up solving, came out horribly wrong:
A coin bank contains $17.00 in
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A coin bank contains $17.00 in
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Question 129279: I worked for a while just trying to find a good formula for this problem and all the ones i found and ennded up solving, came out horribly wrong:
A coin bank contains $17.00 in pennies and nickels. If there are 1140 coins in the bank, how many of the coins are nickels?
I've been working on it for a while but i always end up eleminating any variables, and i know that isn;t going to help me solve what ever formula i am supposed to use.
You can put this solution on YOUR website! P = pennies
N = nickels
P+N = 1140
P+5N = 1700 (each nickel is 5 cents)
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P = 1140 - N
Sub for P in 2nd eqn
(1140 - N) + 5N = 1700
1140 + 4N = 1700
4N = 560
N = 140
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P = 1140 - N
P = 1000
