Answer:
1. rate =24%
base =300
percentage =?
[tex]p = b \times r \\ 300 \times 0.24 = 72[/tex]
2. percentage =12
rate =40%
base=?
[tex]b = \frac{p}{r} \\ b = \frac{12}{.40} \\ b = 30[/tex]
3.rate=90%
base =30
percentage =
[tex]p = b \times r \\ p = 30 \times .90 \\ p = 27[/tex]
4. base =14
percentage =7
rate=?
[tex]r = \frac{p}{b} \\ r = \frac{7}{.14} \\ r =50\%[/tex]
5. base = 45
percentage = 9
rate=?
[tex]r = \frac{p}{b} \\ r = \frac{9}{.45} \\ r = 20\%[/tex]
