Dexter has 40 dimes and quarters. He has $5.20. How many quarters does he have? How many dimes does he have?

Question

Dexter has 40 dimes and quarters. He has $5.20. How many quarters does he have?
How many dimes does he have?

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Thanh Hà 4 years 2021-08-20T09:52:59+00:00 2 Answers 22 views 0

Answers ( )

  1. thuhuong
    0
    2021-08-20T09:54:13+00:00
    Reply

    Answer:

    Step-by-step explanation:

    32 dimes

    8 quarters

  2. minhkhang
    0
    2021-08-20T09:54:21+00:00
    Reply

    Answer:

    dimes = 32

    quarters = 8

    Step-by-step explanation:

    set up a system of equations:

    let d = # of dimes

    let q = # of quarters

    d + q = 40

    .10d + .25q = 5.2

    substitution method; let ‘q’ = 40 – d

    .10d + .25(40 – d) = 5.2

    .10d + 10 – .25d = 5.2

    -.15d = -4.8

    d = 32

    q = 40 – 32 = 8

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