I cant seem to find the measures of these degrees

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Divide. write in simplest form 41/6 divided by 10

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.