Question

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

Answers

  1. 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

Leave a Comment