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

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

Options

A. 1 hour 30 min/ 1घंटा 30 मिनट
B. 2.9 hour (approx.)/ 2.9 घंटे लगभग
C. 2 hours/ 2 घंटे
D. 3 hours / 3 घंटे

Answer

D

Explanation

`because 30% = 4 (1)/(2)" hr"`
`therefore 20% = (9)/(2) xx (20)/( 30)`
`= 3" hrs."`