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Drupady [299]
3 years ago
14

a nursery sells kentucky bluegrass seed for $5.75 per pound and tall fescue seed for $4.50 per pound. the nursery sells a mixtur

e of the two kinds of seed for $5.25 per pound. let k represent the amount of kentucky blue grass seed the nusery uses in in 5 pounds of the mixture
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
3 0

Answer:

k=3

Step-by-step explanation:

Given that:

Per pound cost of kentucky bluegrass seed = $5.75

Per pound cost of tall fescue seed = $4.50

Per pound cost of mixture of seeds = $5.25

k is the amount of kentucky blue grass.

Total amount of the mixture = 5 pounds

Therefore, amount of tall fescue seed = (5 - k) pounds

To find:

The value of k.

Cost of k pounds of kentucky bluegrass seed = \$5.75k

Cost of (5 - k) pounds of tall fescue seed = \$(5-k)4.50

As per question statement:

5.75k+(5-k)4.50=5.25\times 5\\\Rightarrow 575k+5\times 450 -450k=525\times5\\\Rightarrow 125k=75\times5\\\Rightarrow k =3\ pounds

Amount of kentucky blue grass seed used = <em>3 pounds</em>

Amount of tall fescue seed used = 5-3 = <em> 2 pounds</em>

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