SOLUTION: A nickel is worth 5 cents (.05), a dime is worth 10 cents (.10), a quarter is worth (.25) and a dollar is worth 100 cents (.100). A piggy bank contains some quarters, dimes and nic

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Question 1068468: A nickel is worth 5 cents (.05), a dime is worth 10 cents (.10), a quarter is worth (.25) and a dollar is worth 100 cents (.100). A piggy bank contains some quarters, dimes and nickels. There are no other coins in piggy bank. The ratio of the number of quarters to the number of dimes to the number of nickels in the piggy bankis 9: 3: 1. The total value of all coins in the piggy bank is $18.20. Determine the number of coins in the piggy bank
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Q=9x
D=3x
N=x
25Q%2B10D%2B5N=1820
Substituting,
25%289x%29%2B10%283x%29%2B5x=1820
225x%2B30x%2B5x=1820
260x=1820
x=7
So,
Q=9%287%29=63
D=3%287%29=21
N=7