Is 90% advance or proficient
The abstract noun form of the adjective 'proficient' is proficiency.
Being proficient in dealing with numbers
adept. good. proficient. skillful. technical.
Yes.
with
The root is "apt." Words containing it include aptitude and inept
That is the correct spelling of "proficient" (capable, qualified).
He was proficient in arts and crafts
Applicants must be proficient in Microsoft Word and Excel. he's a highly proficient diver.
No it does not. Proficient means average, and advanced is advanced.
Is 90% advance or proficient
The learner driver was classed as proficient in driving their car
Advanced. In school proficient is a B and advanced is an A
I am proficient in answering questions on wiki.answers.com
Job applicants must be proficient in Microsoft and Excel.
Yes, I am proficient in both spoken and written English.