Answer:
We can ratios and proportions as fractions. Write them as fraction, the solve.
21.
[tex]\frac{4}{7}=\frac{x}{14}\\7x=(4)(14)\\7x=56\\\frac{7x}{7}=\frac{56}{7}\\\boxed{\boldsymbol{x=8}}[/tex]
22.
[tex]\frac{N}{8}=\frac{5}{20}\\20N=(8)(5)\\20N=40\\\frac{20N}{20}=\frac{40}{20}\\\boxed{\boldsymbol{N=2}}[/tex]
23.
[tex]\frac{3}{y}=\frac{9}{12}\\9y=(3)(12)\\9y=36\\\frac{9y}{9}=\frac{36}{9}\\\boxed{\boldsymbol{y=4}}[/tex]
24.
[tex]\frac{10}{5}=\frac{12}{T}\\10T=(5)(12)\\10T=60\\\frac{10T}{10}=\frac{60}{10}\\\boxed{\boldsymbol{T=6}}[/tex]
25.
[tex]\frac{N}{6}=\frac{20}{24}\\24N=(6)(20)\\24N=120\\\frac{24N}{24}=\frac{120}{24}\\\boxed{\boldsymbol{N=5}}[/tex]
#CarryOnLearning
