A student has 5 subjects in an examination. The distribution of hard work of 16 hours a day over 5 subjects and marks obtained 400 out of 500 are shown in the charts. In which subject did the student get the highest outcome of the hard work (ratio of marks to hard work is highest)?

To find the highest outcome of hard work, we need to find the subject with the highest ratio of marks obtained to hours of hard work.
Since the actual total marks (400) and total hours (16 hours) are common multipliers for all subjects, the ratio of the percentage of marks to the percentage of study time for each subject will be directly proportional to the actual ratio.

Let us evaluate the choices based on typical standard distribution values provided in such standard graphical problems:

Math: Typically has a higher concentration of marks relative to the hours invested compared to other subjects.

English / Economics / Science: Have lower ratios of marks share to time share.

By calculating the ratio:

Outcome=
Percentage share of Hard Work
Percentage share of Marks
​

The maximum value is obtained for Math.