Answer: 90,000
Step-by-step explanation:
From the question, we are informed that in a local town, 54,000 families have incomes less than $25,000 per year. We are further told that this number of families is 60% of the families that had this income level 12 years ago.
To calculate the number of families who had incomes less than 25,000 per year 12 years ago goes thus:
Let the the number of families who had incomes less than 25,000 per year 12 years ago be represented by x.
Since we are told that this number of families is 60% of the families that had this income level 12 years ago. This means that:
60% of x = 54,000
60/100 × x = 54,000
0.6 × x = 54,000
0.6x = 54,000
Divide by 0.6
0.6x/0.6 = 54000/0.6
x = 90,000
The number of families who had incomes less than 25,000 per year 12 years ago was 90,000.
Answer:
64 8/13
Step-by-step explanation:
The answer is: [A]: The first line graph shown:
The actual wingspan of fly is 5.5cm
Step-by-step explanation:
Given,
Scale of drawing;
4mm = 1cm
Ratio of mm to cm = 4:1
Wingspan of fly in drawing = 22mm
Let,
x be the actual wingspan.
Ratio of mm to cm = 22:x
Using proportion;
Ratio of mm to cm :: Ratio of mm to cm
![4:1::22:x\\](https://tex.z-dn.net/?f=4%3A1%3A%3A22%3Ax%5C%5C)
Product of extreme = Product of mean
![4*x=22*1\\4x=22](https://tex.z-dn.net/?f=4%2Ax%3D22%2A1%5C%5C4x%3D22)
Dividing both sides by 4
![\frac{4x}{4}=\frac{22}{4}\\x=5.5](https://tex.z-dn.net/?f=%5Cfrac%7B4x%7D%7B4%7D%3D%5Cfrac%7B22%7D%7B4%7D%5C%5Cx%3D5.5)
The actual wingspan of fly is 5.5cm
Keywords: proportion, division
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