SOLUTION: Danika has $0.78 in nickels and pennies. The number of pennies that she has is one more than twice the number of nickels. Find how many of each type of coin she has.

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Question 523187: Danika has $0.78 in nickels and pennies. The number of pennies that she has is one more than twice the number of nickels. Find how many of each type of coin she has.
Answer by stanbon(75887) About Me  (Show Source):
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Danika has $0.78 in nickels and pennies. The number of pennies that she has is one more than twice the number of nickels. Find how many of each type of coin she has.
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Value Equation: p + 5n = 78 cents
Quantity Eq::: p = 2n+1 coins
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Substitute for "p" and solve for "n":
2n+1 + 5n = 78
7n = 77
n = 11 (# of nickels)
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solve for "p":
p = 2n + 1
p = 2*11+1 = 23 (# of pennies)
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Cheers,
Stan H.
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