Answer:
C) 9
Explanation:
an hour = 60 minutes
to find 3/4 of an hour:
3/4 × 60 = 45 minutes left before he leaves for track practice
since each problem takes 1/12 of an hour:
1/12 × 60 = 5 minutes for each question spent
How many problems will he be able to finish?
45 minutes ÷ 5 minutes = 9 questions