Question

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Saira's marks in a written and an oral exam are in the ratio of 5:3. If the total marks she got in
written and oral are 80, what are her marks in the oral exa​

Answer 1

Answer:

Written = 50 and oral = 30

Step-by-step explanation:

Ratio of written and oral = 5:3

Total marks scored = 80

Let the marks scored in written be = 5x and oral be = 3x

ATQ,

5x +3x = 80

8x = 80

x = 10

Hence, the marks scored in written were 50 and oral were 30.

Hope it helps you...

Answer 2

AnswEr :

• Written Exam : Oral Exam = 5 : 3
• Total Marks = 80

Let the Ratio of written exam and oral exam be 5x and, 3x respectively.

$\underline{\bigstar\:\textsf{According to the Question Now :}}$

$:\implies\tt Written\:Exam+Oral\:Exam=Total\:Marks\\\\\\:\implies\tt5x+3x=80\\\\\\:\implies\tt8x=80\\\\\\:\implies\tt x=\dfrac{80}{8}\\\\\\:\implies\tt x = 10$

$\underline{\bigstar\:\textsf{Marks in Oral Exam :}}$

$\dashrightarrow\:\:\tt Oral\:Exam=3x\\\\\\\dashrightarrow\:\:\tt Oral\:Exam=3(10)\\\\\\\dashrightarrow\:\:\underline{\boxed{\tt Oral\:Exam=30}}$

⠀

$\therefore\:\underline{\textsf{Saira's Marks in Oral Exam is \textbf{30.}}}$

$\rule{200}{1}$

$\underline{\bigstar\:\textsf{SHORTCUT TRICK :}}$

– When Ratios are Given with Whole Number, then Read the Statment of Whole Number Clearly.

– Whether it's Addition, Subtraction, Multiplication or Specifically any Ratio here i.e. Addition of Ratios (Total Marks)

– Divide Whole Number by Ratios according to the Question. & Multiply it by Specific Ratio to get Desired Result.

$\twoheadrightarrow\:\:\tt Desired\:Result= \dfrac{Whole\:Number}{Application\:of\:Ratios}\times Specific\:Ratio\\\\\\\twoheadrightarrow\:\:\tt Oral\:Exam=\dfrac{Total\:Marks}{Addition\:of\:Ratio}\times Oral\:Exam\:Ratio\\\\\\\twoheadrightarrow\:\:\tt Oral\:Exam=\dfrac{80}{(5+3)} \times 3\\\\\\\twoheadrightarrow\:\:\tt Oral\:Exam=\dfrac{80}{8} \times 3\\\\\\\twoheadrightarrow\:\:\tt Oral\:Exam=10 \times 3\\\\\\\twoheadrightarrow\:\:\underline{\boxed{\tt Oral\:Exam=30}}$

⠀

$\therefore\:\underline{\textsf{Saira's Marks in Oral Exam is \textbf{30.}}}$