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Math 6th grade, Circle graphs

by Haylee
(Manson, IA US)











































Using Percentages

On average, 8 million adults listen to classical
music on the radio each day.

A. Estimate how many adults between the ages 35 and 44 listen to classical music
on the radio each day.

B. Estimate how many adults at least 45 years old listen to classical music on the
radio each day.

On the chart of ages the percent of listeners by ages I think is; A. 24% and B. 20%

Comments for Math 6th grade, Circle graphs

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Jan 11, 2013
Using Percentages
by: Staff


Answer

Part I
The answers to your two questions are:



A. Estimate how many adults between the ages 35 and 44 listen to classical music on the radio each day.

This includes only one age category. The answer can be read directly from the table below: 35 to 44 years old

1,920,000 adults





B. Estimate how many adults at least 45 years old listen to classical music on the radio each day.

This is the sum of the adults in three age categories: 45 to 54 years old, 55 to 64 years old, and 65 + years old

3,760,000 adults (1,600,000 adults + 880,000 adults + 1,280,000 adults)






Circle Graph – percentage of adults who listen to classical music by age






Jan 11, 2013
Using Percentages
by: Staff

------------------------------------


Part II




Age Percent of Degree
Listeners Measure
----- ------------- -----------

18 – 24 11 % 11% × 360° = 39.6°
(0.11 × 360°)

25 – 34 18 % 18% × 360° = 64.8°
(0.18 × 360°)

35 – 44 24 % 24% × 360° = 86.4°
(0.24 × 360°)

45 – 54 20 % 20% × 360° = 72°
(0.20 × 360°)

55 – 64 11 % 11% × 360° = 39.6°
(0.11 × 360°)

65 + 16 % 16% × 360° = 57.6°
(0.16 × 360°)




Age Percent of Number of
Listeners Adults
----- ------------- -----------

18 – 24 11 % 11% × 8 million = 880,000 adults
(0.11 × 8000000)

25 – 34 18 % 18% × 8 million = 1,440,000 adults
(0.18 × 8000000)

35 – 44 24 % 24% × 8 million = 1,920,000 adults
(0.24 × 8000000)

45 – 54 20 % 20% × 8 million = 1,600,000 adults
(0.20 × 8000000)

55 – 64 11 % 11% × 8 million = 880,000 adults
(0.11 × 8000000)

65 + 16 % 16% × 8 million = 1,280,000 adults
(0.16 × 8000000)









Thanks for writing.

Staff
www.solving-math-problems.com



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