Comprehension Passage
Directions: Study the chart carefully and the questions that follow.
Four trainers A, B, C and D take classes in a month. The pie chart shows the total hours of classes taken by all four trainers.
Total hours = 60
Note : (1) They can take classes for 1 hour (Basic class). 2 hours (Regular class) and 3 hours (Advance class). No trainer can leave class before time and cant take class before time and cant take class for any extra time.
(2) D doesn't take any regular class. He will take either Basic or Advance class.
If the ratio of the number of basic classes to regular classes is 1 : 1 and the ratio of the number of regular classes to advance classes is 3 : 1, then what will be the total time duration of regular classes for A.
1
4
2
5
3
6
4
7
5
none of these