Question

A 2010 estimate of Australia's population is 21,515,754.
Which is the best estimate of the number of Australians with type A blood in 2010?
Blood Types in Australia

Answer 1

Answer:

$\mathrm{Number\:of\:Australians\:with\:type\:A\:Blood\:Group\:in\:2010}\:\approx\:8175987$

Step-by-step explanation:

$\mathrm{Percent}:\\\\\mathrm{A\:ratio\:expressed\:as\:a\:fraction\:out\:of\:a\:hundred.}\\\\\mathrm{In\:order\:to\:convert\:a\:percent\:to\:a\:ratio,\:divide\:it\:by\:100}:\\\\38\%\:=\frac{38}{100}\\\\\mathrm{Percentage\:of\:population\:with\:A\:Blood\:Type}\:=\frac{38}{100}\times 21515754\\\\\approx8175987$

Answer 2

An estimated 8,175,987 Australians have Type A blood.

There were 21,515,754 in Australia in 2010. In the same year, it was estimated that 38% of people had Type A blood.

This means that the best estimate of people in Australia with Type A blood is:

= Percentage of people with type A blood x Number of people in Australia

= 38% x 21,515,754

= 8,175,986.52

= 8,175,987 people

In conclusion, approximately 8,175,987 Australians have Type A blood.

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