SOLUTION: Laura has an equal number of dimes, nickels, and quarters. If their total value is less than 9 dollars, what is the maximum number of each that she could have?

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Question 648282: Laura has an equal number of dimes, nickels, and quarters. If their total value is less than 9 dollars, what is the maximum number of each that she could have?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
.25X+.10X+.05X<=9.00
.40X<=9.00
X<=9.00/.40
X<=22.5 OR THE MAX IX 22.
PROOF:
.25*22+.10*22+.05*22<=9.00
5.50+2.20+1.10<=9.00
8.80<=9.00