If a 11/20 of a class speaks a second language and 2/5 of those that speak a second language speak Haitian-Creole, what percentage of the class speaks Haitian Creole?

if a 11/20 of a class speaks a second language and 2/5 of those that speak a second language speak Haitian-Creole, what percentage of the class speaks Haitian Creole?