Number of Weeks

[nycmath]

If there are 4 weeks in a month, how many weeks in 36 months?

[Eigenvalue]

We can make a proportion:
Let x be the number of weeks in 36 months
[tex]\frac{4}{1}[/tex]=[tex]\frac{x}{36}[/tex]
x=4*36=144

[nycmath]

We can make a proportion:
Let x be the number of weeks in 36 months
[tex]\frac{4}{1}[/tex]=[tex]\frac{x}{36}[/tex]
x=4*36=144

Cross-multiplication works very well.