7th grade math help me please :))

Can some one me with this math problem?

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?

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?