Answer
Find out the how much of her total sales did she donate .
To prove
Let us assume that the songstress gives away of the sales of her signature fragrance collection to her charity be x.
Formula
![Percentage = (Part\ value*100)/(Total\ value)](https://img.qammunity.org/2019/formulas/mathematics/high-school/otxqkh4100k1acbhqatp6wkk9zpovs0tf3.png)
As given
songstress gives away 25 percent of the sales of her signature fragrance collection to her charity.
Last month her sales were 1200.
Thus
Percentage = 25 %
Total value = 1200
Put in the formula
![25 = (x*100)/(1200)](https://img.qammunity.org/2019/formulas/mathematics/high-school/y0itv2up7wt7r1gxpvpgooqkj295a61qpp.png)
![x = (25*1200)/(100)](https://img.qammunity.org/2019/formulas/mathematics/high-school/pkcpyzuldnq7nv8p4xb3p6tdjdkwwn7foo.png)
![x = (30000)/(100)](https://img.qammunity.org/2019/formulas/mathematics/high-school/4jzey9k5zryrg1cxnldns4oa3ydq29izab.png)
x = 300
Therefore songstress gives away of the sales of her signature fragrance collection to her charity be 300 .