You subtract 2.3 million from 4.1 million and you get your answer of 1.8 million
Z=11 is the answer for this problem
His answer is correct because if you have the pie chart, it shows the percentage. <span>he did 45 times 3 to get the 135 because he though since 10% is 45 people he could multiply by 3 & get his answer.
Hope this helped.</span>
