Quantitative Reasoning

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  • PE1.6
  • March 4, 2015 at 1:59 pm #29671

    Ezra Halleck
    Participant

    6. The ADA reports that 11 out 25 people do not eat breakfast. If there are 175 students in a large lecture hall, about how many did not eat breakfast
    a. Solve by the method of proportions (define 1 variable).
    b. Solve by the method of direct variation. Define 2 variables, write an equation and identify the constant of proportionality.

    March 10, 2015 at 10:28 pm #29825

    Eva
    Participant

    A.
    11 25
    — = —
    x 175

    You cross multiply which gives you:

    B.
    25x=11(175)
    25x=1925
    X = 1925
    —-
    25
    X=77

    77 people did not eat breakfast.

    • This reply was modified 9 years, 10 months ago by Eva.
    April 8, 2015 at 6:39 pm #30071

    Ezra Halleck
    Participant

    you solved using proportions (A)
    method of direct variations (B) remains unsolved

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