Question

HELP PLEASE (PICTURE IS PROVIDED)
A 2010 estimate of Australia's population is 21.515.754
which is the best estimate of the number of australians with type o blood in 2010?
A)645,473
B)2,151,575
C)8,175,987
D)10,542,719

Answer 1

we know that

The number estimate of Australia's population with type O blood in $2010$ is $49\%$ of the total estimate  

So

to find the best estimate of the number of australians with type O blood in $2010$

Multiply  the total Australia's population estimate by the percentage with type O blood

$21,515,754*0.49=10,542,719.46$

therefore

the answer is

the best estimate of the number of australians with type O blood in $2010$ is the option

D)10,542,719