Answer:
p = [tex]\frac{16}{3}[/tex]
Step-by-step explanation:
Given
[tex]\frac{p}{20}[/tex] = [tex]\frac{p-4}{5}[/tex] ( cross- multiply )
20(p - 4) = 5p ← distribute left side
20p - 80 = 5p ( subtract 5p from both sides )
15p - 80 = 0 ( add 80 to both sides )
15p = 80 ( divide both sides by 15 )
p = [tex]\frac{80}{15}[/tex] = [tex]\frac{16}{3}[/tex]
