SOLUTION: Keisha has a collection of dimes and nickels worth a total of $4. If she has 50 coins in all, how many nickels does Keisha have?

Question 795352: Keisha has a collection of dimes and nickels worth a total of $4. If she has 50 coins in all, how many nickels does Keisha have?
Found 2 solutions by sck12, Alan3354:
Answer by sck12(1) (Show Source): You can put this solution on YOUR website!
4.00 = x*0.1 + y*0.05
Work with the y variable first as you know for both to sum to $4.00 the nickels must be a factor of 10. Dealing with dimes will always be in factors of 10.
x= 30 dimes y = 20 nickels
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Keisha has a collection of dimes and nickels worth a total of $4. If she has 50 coins in all, how many nickels does Keisha have?
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d + n = 50
10d + 5n = 400
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etc
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