Question

what is the percentage of a girl whose total score is 320 and she hass 7 subject of 80 marks ?​

Answer 1

Answer:

3.2%

Step-by-step explanation:

560-320=240

320/100=16/5=3.2%

Answer 2

➤ Given :-

Total scores of a girl :- 320

Total subjects for exam :- 7

Total marks of each exam :- 80

➤ To Find :-

Percentage obtained by girl in her exam

➤ Formula required :-

${\large \tt \dashrightarrow \orange{\boxed{\tt \gray{\dfrac{Obtained \: value}{Total \: value} \times 100}}}}$

How to do :-

Here, we are given that a girl obtained 320 marks in her examination. She had 7 subjects in her exam each consisting 80 marks. So, first we should find the total marks by multiplying the total subjects and marks for each subject. Then, we should use the given formula and find percentage obtained by that girl.

➤ Solution :-

Total marks of exam :-

${\tt \longrightarrow 80 \times 7}$

${\tt \longrightarrow 560 \: \: marks}$

Percentage obtained by her :-

${\tt \longrightarrow \dfrac{320}{560} \times 100}$

${\tt \longrightarrow \cancel \dfrac{320}{560} \times 100 = \dfrac{4}{7} \times 100}$

${\tt \longrightarrow \dfrac{4 \times 100}{7} = \dfrac{400}{7}}$

${\tt \longrightarrow \cancel \dfrac{400}{7} = \boxed{\tt 57.1}}$

$\Huge\therefore$ The girl obtained 57.1% in her examination.

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More to know :-

• We can convert the percentage to fractions, decimals and ratios format by using some methods.
• To convert fractions to percentage form, we should multiply the given fraction with 100.
• To convert decimal to percentage, first we should convert it to fraction form and then multiply by 100.
• To convert the ratio to percentage form, first we should convert it to fraction form and then multiply by 100.