Suppose the ratio of Lev's age to Mina's age is $1 : 2$ and the ratio of Mina's age to Naomi's age is $3 : 4$. What is the ratio of Lev's age to Naomi's age? Give your answer in simplest form.

L==M / 2

N==4M / 3

L / N==[M / 2] / [4M / 3]

L / N==3 / 8

Thank you!