Instruction 4.6 at a NSW University, 60% of the Students Are from Are

Instruction 4.6
At a NSW University, 60% of the students are from NSW, 30% are from interstate, and the remaining 10% are from overseas. All students must take and pass an English Proficiency Test (EPT) before they graduate. 60% of the NSW students have passed the EPT, 70% of the interstate students have passed the EPT, and 90% of the overseas students have passed the EPT.
-Referring to Instruction 4.6,the probability that a randomly selected student is someone from interstate who has not passed the EPT is_____________ .