Need to know what permit you're asking about.
Check the laws for the state you are in. In Oregon you may take your road test without a permit if you are over 18, but you can not legally drive on public roads otherwise without a permit.
it depends on how much you study
The test is very easy to pass if you just focus and have general knowledge, some questions you may have to know, but its an easy guess.
They have 35 total question and you must answer 28 of them. Which is 80%
$23.50 for instruction permit
$5 for the test and I'm thinking i paid $40 for the rest of it like the card and papers. that was in June btw
It is fairly easy if you study the Motorcycle handbook and they also have Motorcycle Practice Tests online to help you through it. If needed you can also purchase 50 or 100 study test questions.
my mom says it is kind of easy i think before you get your licence you have to take a test about the driving law
With a work permit yes
depending on what state you are in you take a written test for the permit and the driving on the driving test.
There are many places to practice taking a driving permit test. You can try http://www.drivingdirectory.com/test/htm to get a free driving permit tst.