The following tables shows the marks (out of 100) obtained by five students in five different subjects.

Student ↓ Subject →	Maths	Physics	Chemistry	English	Physical Education
Tarun	65	80	75	85	90
Rohit	69	76	80	88	94
Mohit	76	84	77	90	95
Shobhit	76	85	76	86	78
Sumit	90	88	78	82	68

Who obtained 79 % marks in all the subject taken together?

The correct option is Tarun.

To find out who obtained 79% marks in all subjects taken together, let us analyze the marks obtained by each student across all five subjects: Maths, Physics, Chemistry, English, and Physical Education. Each subject is out of 100 marks, which means the total maximum marks for 5 subjects is:
$5\times 100=500$

If a student obtained 79% marks in total, their total marks must be:
$79\%\text{ of }500=\frac{79}{100}\times 500=79\times 5=395$

Let us calculate the sum of marks for each student listed in the options to see whose total sum equals 395:

1. Tarun:
$\text{Total Marks}=65+80+75+85+90$
Let's add these values step-by-step:
$65+80=145$
$145+75=220$
$220+85=305$
$305+90=395$
Since Tarun's total marks are exactly 395, his percentage is indeed:
$\frac{395}{500}\times 100=79\%$

Let's also verify the total marks for the other students to be absolutely sure:

2. Rohit:
$\text{Total Marks}=69+76+80+88+94=407$
Percentage = 81.4%

3. Mohit:
$\text{Total Marks}=76+84+77+90+95=422$
Percentage = 84.4%

4. Sumit:
$\text{Total Marks}=90+88+78+82+68=406$
Percentage = 81.2%

Therefore, Tarun is the student who obtained exactly 79% marks when all subjects are taken together.