Question #13f34

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Answer 1 · 2015-03-22T16:52:04

$$72$

There are several ways to think about and answer this question.

One is to find the cost of coral in $$/(kg)$ and then multiply by 8,000.
Or find the cost of coral in $$/(1000 kg)$ and then multiply by 8.

Alternatively, we can think of this as a Proportion:

find the number $n$ for which:

$n$ is to $8000$ as $27$ is to $3000$

$n:8000 = 27:3000$

$n/8000 = 27/3000$

$3000*n = 8000*27$

$n=(8000*27)/3000 = (8*27)/3=8*9=72$