Mr. Alvarado bought a total of 20 pounds of grass seed at the nursery for $168. He paid $9 per pound for Kentucky blue grass and $6 per poun

Question

Mr. Alvarado bought a total of 20 pounds of grass seed at the nursery for $168. He paid $9 per pound for Kentucky blue grass and $6 per pound for Tall Fescue. Which system of equations can be used to find the amount x (in pounds) of Kentucky blue grass and the amount y (in pounds) of Tall Fescue Mr. Alvarado purchased?

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Latifah 3 years 2021-07-25T19:09:57+00:00 2 Answers 78 views 0

Answers ( )

  1. Neala
    0
    2021-07-25T19:11:07+00:00
    Reply

    Answer:

    168= 9x+6y

    y+x=20

    168= 9x + 6 (20-x)

    y=4

    x=16

  2. nguyetanh
    0
    2021-07-25T19:11:15+00:00
    Reply

    Answer:

    K+T=20

    $9K + $6T = $168

    K is the Kentucky blue grass in pounds

    T is the Tall fescue in pounds

    Step-by-step explanation:

    You can start with the first equation. We don’t know the exact amounts of each but we know that there was a total of 20 pounds, and there were 2 types of grass seeds, so we can get that the amount of pounds of Kentucky blue grass(K) and the pounds of Tal Fescue(T) has a sum of 20.

    K + T = 20

    For the second equation we know that there is a sum of $168 so we’ll start with that. Then, we know he paid $9 per pound of K so $9* the value of K is the amount paid for Kentucky blue grass total. This can be represented as 9K. We do the same for T, 6T. Since the sum of the cost of $9T and $6K must be $168 we can write this as:

    $9K + $6T = $168

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