Mala and Bala got 75 marks and 25 marks respectively in an examination. Find the ratio of the marks scored by Mala to total marks obtained by both of them.

3:4

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3:1

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1:3

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4:3

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Solution

The correct option is A 3:4
Given: Marks obtained by Mala = 75 marks
Marks obtained by Bala = 25 marks
Total marks scored by both = 75 + 25 = 100 marks
$\Rightarrow$ Ratio of marks scored by Mala to the total marks obtained
= $\frac{M a r k s s c o r e d b y M a l a}{T o t a l n u m b e r o f m a r k s s c o r e d b y b o t h}$
= $\frac{75}{100}$
= $\frac{3}{4}$ i.e. 3:4
Therefore, the required ratio is 3:4.

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