Aptitude - Aptitude- Fraction

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A mixture contains alcohol and water in the ratio 4 : 3. If 5 litres of water is added to the mixture, the ratio becomes 4 : 5. Find the quantity of alcohol in the given mixture.

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a
14
b
9
c
10
d
12

OOPS, your answer is incorrect

Let the quantity of alcohol and water be 4x litres and 3x litres respectively. Then,

4x3x+5

=45

<=>20x = 4(3x+5) <=> 8x= 20 <=> 2.5

Quantity of alcohol = (4x 2.5) litres = 10 litres

A sum has to be distributed among Prem, Sapna and Neera in the ratio 2 : 3 : 5. If Sapna gets Rs. 1200, what has Prem got?

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a
1500
b
800
c
2000
d
2400

OOPS, your answer is incorrect

Let the share of Prem, Sapna and Neera be 2x, 3x and 5x respectively. Given, 3x = 1200 => x = 400 Share of Prem = 2x = Rs. 800

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