The following pie-Âchart shows the studyÂ time of different subjects of a student in a day . Study the pie chart and answer the following questions._x005F_x000D_ _x005F_x000D_ Instead of 10% , if the student spends 15% to study other subjects and the time is taken from the time scheduled to study mathematics and if he/ she used to study 20 hours per day , then the difference of time for studying mathematics per day is

The following pie-Âchart shows the studyÂ time of different subj

1.	The following pie-Âchart shows the studyÂ time of different subjects of a student in a day . Study the pie chart and answer the following questions._x005F_x000D_ _x005F_x000D_ Instead of 10% , if the student spends 15% to study other subjects and the time is taken from the time scheduled to study mathematics and if he/ she used to study 20 hours per day , then the difference of time for studying mathematics per day is
A.	30 minutes
B.	45 minutes
C.	1 hour
D.	1 hour 30 minutes
Answer» D. 1 hour 30 minutes