Answer:
Number of CDs sold each day Frequency
0 – 10 10
11 – 20 34
21 – 30 24
31 – 40 13
41 – 50 7
51 – 60 12
It would be: 35+66 / 2 = 101/2 = 50.5
So, 50.5 is your answer
Using proportions, considering the income tax of 10%, you actually earn $1,215 a month.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
For people earnings less than $19,000 a year, the income tax is of 10%, hence the amount you actually earn is given by:
A = 0.9 x 1350 = $1,215 a month.
More can be learned about proportions at brainly.com/question/24372153
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