<span>valid. She used a representative sample
</span>because she correctly found the average and 18,000 is a reasonable number to get for a the problem
Answer:
I don't know but if it feels like you shouldn't be doing it then don't
Step-by-step explanation:
(10 Aus) x <u>(1 NZ / 0.8262 Aus)</u> x <u>(1 Brit / 3.1517 NZ)</u> x <u>(1 US$ / 0.6536 Brit)</u> =
(10) / (0.8262 x 3.1517 x 0.6536) = <em>US$ 5.87</em> (rounded)
Notice that each of the underlined fractions in the top line is equal to " 1 ".
So they change the units of the " 10 AUS " but they don't change its value.,