Directions (1 - 4): The following pie- chart shows the study- time of different subject of a student in a day. Study the pie chart and answer the following questions.
Direction image of Pie Chart chapter

Instead of 10%, if the students 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 their difference of time for study mathematics per day is:

The time spent to study history and chemistry is 4 hours 30 minutes, Then the student studies physics for:

If the student studies 10 hours in a day, then he/she studies mathematic for:

If then student studies chemistry for 3 hours, then he/she studies geography for: