# What must n be if the ratio 6:7 is equivalent to 36:n?

$n$ = 42
You first do $\setminus \frac{36}{6}$ which equals 6. This is the constant that you are going to multiply by 7. Since you have to multiply by both sides on a ratio, you do 6$\times$6 and 6$\times$7. This equals 42.