A college received 90% of its order of laptop keyboards from a vendor. Some of the keyboards were defective. The equation below

Question

A college received 90% of its order of laptop keyboards from a vendor.

Some of the keyboards were defective. The equation below represents this

situation, where x represents the total number of keyboards ordered and y

represents the number of keyboards that were non-defective. y = 0.9x –

1/18(0.9x) If the college ordered 200 keyboards, how many non-defective

keyboards did the college receive?*

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Xavia 3 months 2021-07-21T10:03:46+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-21T10:05:25+00:00

    Answer:

    170

    Step-by-step explanation:

    Given that: x represents total number of keyboards ordered

                      y represents number of non-defective keyboards

    And;

                      y = 0.9x – \frac{(0.9x)}{18}    …………………….. 1

    If the college ordered 200 keyboards, then x = 200. So that substituting the value of x in equation 1, we have;

    y = (0.9 x 200) – \frac{(0.9*200)}{18}

      = 180 – \frac{180}{18}

      = 180 – 10

    y = 170

    The college received 170 non-defective keyboards.

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