SOLUTION: rhonda has 25 coins in the pocket all of the coins are either dimes or nickels. if rhonda has a total of 2.30, how many dimes does she have?

Question 820537: rhonda has 25 coins in the pocket all of the coins are either dimes or nickels. if rhonda has a total of 2.30, how many dimes does she have?
Found 2 solutions by TimothyLamb, stanbon:
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x + y = 25
5x + 10y = 230
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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x= 4
y= 21
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answer:
dimes 21
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Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
rhonda has 25 coins in the pocket all of the coins are either dimes or nickels. if rhonda has a total of 2.30, how many dimes does she have?
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Equations:
Quantity Equation:: n + d = 25 coins
Value Equation:::: 5n+10d = 230 cents
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5n + 5d = 125
5n +10d = 230
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Subtract and solve for "d":
5d = 105
d = 21 (# of dimes)
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Solve for "n":
n+d = 25
n = 4 (# of nickels)
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Cheers,
Stan H.
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