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Q:

From a container of wine, a thief has stolen 15 litres of wine and replaced it with same quantity of water. He again repeated the same process. Thus, in three attempts the ratio of wine and water became 343 : 169. The initial amount of wine in the container was:

A) 75 litres	B) 100 litres
C) 150 litres	D) 120 litres

Answer & Explanation Answer: D) 120 litres

Explanation:

$\frac{w i n e (l e f t)}{w i n e (a d d e d)} = \frac{343}{169}$

It means $\frac{w i n e (l e f t)}{w i n e (i n i t i a l a m o u n t)} = \frac{343}{512}$ (since 343 + 169 = 512)

Thus, $343 x = 512 x {(1 - \frac{15}{k})}^{3}$

$\frac{343}{512} = {(\frac{7}{8})}^{3} = {(1 - \frac{15}{k})}^{3}$

$(1 - \frac{15}{k}) = \frac{7}{8} = (1 - \frac{1}{8})$

Thus the initial amount of wine was 120 liters.

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Filed Under: Alligation or Mixture
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

Q:

A jar was full with honey. A person used to draw out 20% of the honey from the jar and replaced it with sugar solution. He has repeated the same process 4 times and thus there was only 512 gm of honey left in the jar, the rest part of the jar was filled with the sugar solution. The initial amount of honey in the jar was:

A) 1.25 kg	B) 1 kg
C) 1.5 kg	D) None of these

Answer & Explanation Answer: A) 1.25 kg

Explanation:

Let the initial amount of honey in the jar was k, then

$512 = k {(1 - \frac{1}{5})}^{4} o r 512 = k {(\frac{4}{5})}^{4}$

=> $k = \frac{512 \times 625}{256}$

=> k = 1250

Hence initially the honey in the jar = 1.25 kg

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Filed Under: Alligation or Mixture
Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

Q:

A milkman has 20 liters of milk. If he mixes 5 liters of water, which is freely available, in 20 liters of pure milk. If the cost of pure milk is Rs. 18 per litre, then the profit of the milkman, when he sells all the mixture at cost price, is:

A) 20%	B) 25%
C) 33.33%	D) 18%

Answer & Explanation Answer: B) 25%

Explanation:

When the water is freely available and all the water is sold at the price of the milk, then the water gives the profit on the cost of 20 litres of milk.

Since, the profit % = $\frac{P r o f i t}{C o s t P r i c e} x 100$

Therefore, profit percentage = $\frac{5}{20} x 100$ = 25%

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Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

Q:

Why is it that you cannot overload the scope resolution operator (::)?

Answer

The main reason why the scope resolution operator (::) cannot be overloaded is that only operators that take in values as parameters can be overloaded. The scope resolution operator does not take a value as parameter.

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Subject: Microsoft Interview

Q:

Can you suggest any other way of writing the following expression such that 30 is used only once?

a <= 20 ? b = 30 : c = 30 ;

Answer

*( ( a <= 20 ) ? &b : &c ) = 30;

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Subject: Programming

Q:

Point out the error, if any, in the following program.

main()

{

int i = 4, j = 2;

switch(i)

{

case 1 :

printf (''\n To err is human, to forgive is against company policy.");

break;

case j :

printf (''\n if you have nothing to do, don't do it here.");

break;

}

Answer

Constant expression required in the second case, we cannot use j.

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Subject: Programming

Q:

A man is facing north-west. He turns $90^{o}$ in the clockwise direction, then $180^{o}$ in the anticlockwise direction and then another $90^{o}$ in the same direction. Which direction is he facing now?

A) South	B) South-west
C) South-east	D) East

Answer & Explanation Answer: C) South-east

Explanation:

As shown in fig. the man initially faces in the direction OP. On moving $90^{0}$ clockwise, he faces in the direction OX. On further moving $180^{0}$ anticlockwise, he faces in the direction OY. Finally, on moving $90^{0}$ anticlockwise, he faces in the direction OZ, which is South-east. new1497431743.jpg image

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Filed Under: Direction Sense Test
Exam Prep: CAT , Bank Exams
Job Role: Bank PO , Bank Clerk

Q:

Under the minimum reserve system, the Reserve Bank of India as the sole authority of note issuse is required to maintain assets worth not less than:

A) 85 crore of rupees	B) 115 crore of rupees
C) 200 crore of rupees	D) 210 crore of rupees

Answer & Explanation Answer: B) 115 crore of rupees

Explanation:

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Filed Under: Indian Economy

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