Question

use the circle graph to answer the following questions. a.) how many more pop/rock records than soul records were sold in the year shown?b.) how many fewer classical records than soul records were sold in the year shown ?

Answer 1

Find the total amount of each type of music records that were sold using the percentages shown in the graph. Notice that a total of 64 million were sold.

Pop/rock: 58%

`(58)/(100)\cdot64\text{ million}=37.12\text{ million}`

Soul: 19%

`(19)/(100)\cdot64\text{ million}=12.16\text{ million}`

Country: 9%

`(9)/(100)\cdot64\text{ million}=5.76\text{ million}`

Classical: 7%

`(7)/(100)\cdot64\text{ million}=4.48\text{ million}`

Other: 7%

`(7)/(100)\cdot64\text{ million}=4.48\text{ million}`

Use those numbers to find the answers.

a) Substract the total amount of soul records from the total amount of pop/rock records:

`37.12\text{ million}-12.16\text{ millon}=24.96\text{ million}`

24.96 million more pop/rock records were sold.

b) Substract the total amount of classical records from the total amount of soul records to find the answer:

`12.16\text{ million}-4.48\text{ million}=7.68\text{ million}`

7.68 million fewer classi