College Algebra

Mukul h!@#$%^&1.60 in nickels, dimes, and quarters. He has nine more dimes than quarters and six more nickels than quarters. How many of each coin are in his pocket.
d=# dimes
n=# nickels
q= # quarters

d+n+q=1.60
d+9=q
n+6=q
0.1d+0.05n+0.25q=1.60

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asked by Anonymous
  1. 10 d + 5 n + 25 q = 160

    d = q + 9

    n = q + 6

    substituting
    ... 10(q + 9) + 5(q + 6) + 25 q = 160

    solve for q,
    then substitute back to find d and n

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    posted by Scott
  2. Hey, your questions are really all the same. Read one of our replies carefully and you should be able to do them all.

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    posted by Anonymous

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