Question 13f34

$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$$n : 8000 = 27 : 3000$$\frac{n}{8000} = \frac{27}{3000}$$3000 \cdot n = 8000 \cdot 27$$n = \frac{8000 \cdot 27}{3000} = \frac{8 \cdot 27}{3} = 8 \cdot 9 = 72\$