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Kim purchased n items from a catalog for $8 each.

This topic has 1 expert reply and 0 member replies

Kim purchased n items from a catalog for $8 each.

Post Wed Nov 08, 2017 7:56 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Kim purchased n items from a catalog for $8 each. Postage and handling charges consisted of $3 for the first item and $1 for each additional item. Which of the following gives the total dollar amount for Kim’s purchase, including postage and handling, in terms of n ?

    (A) 8n + 2
    (B) 8n + 4
    (C) 9n + 2
    (D) 9n + 3
    (E) 9n + 4

    The OA is C.

    I am confused. I thought the correct answer should be A. Why is C?

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    Post Wed Nov 08, 2017 10:13 am
    VJesus12 wrote:
    Kim purchased n items from a catalog for $8 each. Postage and handling charges consisted of $3 for the first item and $1 for each additional item. Which of the following gives the total dollar amount for Kim’s purchase, including postage and handling, in terms of n ?

    (A) 8n + 2
    (B) 8n + 4
    (C) 9n + 2
    (D) 9n + 3
    (E) 9n + 4

    The OA is C.

    I am confused. I thought the correct answer should be A. Why is C?
    Hi VJesus12,
    Let's take a look at your question.

    Let's first find the total purchase price.
    Kim purchased n items for $8 each, therefore, the total purchase price of n items is 8n.

    Now, let's find the postage and handling charges of n items, which is $3 for the first item and $1 for each additional item.
    Total postage and handling charges = 3 + 1*(n-1) = 3 + n - 1 = n + 2

    Total dollar amount of Kim’s purchase, including postage and handling = Purchase price + total postage and handling charges
    = 8n + n + 2 = 9n + 2

    Therefore, Option C is correct.

    Hope it helps.
    I am available if you'd like any follow up.

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