The following pie chart shows the study time of different subjects of a student in a day.
If the total time spent to study History and Chemistry is 4 h 30 m, then the student studied Physics for:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 3 h
Every sector is a percentage of the same total study time, so the time spent on a subject is proportional to its percentage.
History and Chemistry together: \(15\%+15\%=30\%\) of the day’s study, which is 4 h 30 m \(=4.5\) h
So 10% of the study time \(=4.5\div3=1.5\) h
Physics is 20%: \(2\times1.5=3\) h