Direction: The following pie-chart shows the study time of different subjects of a student in a day. Study the pie–chart and answer the following questions
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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 :
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- 30 minutes
- 45 minutes
- 1 hour
- 1 hour 30 minutes
Correct Option: C
On the basis of given pie chart in question ,
Percent of studying Maths students = 30%
Time spent in mathematics in a day = 20 hours
| Usual time spent in studying Maths = | × 30 = 6 hours | 100 |
| Usual time spent in studying other subjects = | × 20 = 2 hours | 100 |
| New time spent in studying other subjects = | = 3 hours | 100 |
Difference = New time spent in studying other subjects - Usual time spent in studying other subjects
Difference = 3 – 2 = 1 hours
