Krishnan bought a camera and paid 20% less than its original price.

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RRB TC CC Exam (Chandigarh) 2008 click here to view all questions

Krishnan bought a camera and paid 20% less than its original price. He sold it as 40% profit on the price he had paid. The percentage of profit earned by krishnan on the original price was

A22

B32

C12

D15

Nithin K ? Apr 3 '2018 at 20:1

Answer is : 12

Explanation :

Let the original price be x Rs.

\(=\frac{80}{100} \times x = \frac{4x}{5} Rs\)

\(SP = \frac{4x}{5} \times \frac{140}{100} = \frac{28x}{25} Rs\)

Gain on original price

\(\frac{28x}{25} - x =\frac{3x}{25}\)

\(\therefore \text{Gain % =}\frac{3x}{\frac{25}{x} \times 100} \text{= 12%}\)

=12%
 

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Due to 20% reduction in the price of sugar, a man is able to purchase 6 kg

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Due to 20% reduction in the price of sugar, a man is able to purchase 6 kg more sugar in Rs.120. The original rate of sugar was

ARs.5 per kg

BRs.6.15 per kg

CRs.5.65 per kg

DRs.6.20 per kg

Nithin K ? Apr 2 '2018 at 22:21

Answer is : Rs.5 per kg

Explanation:

20% of 120/- is 24 /- 

Therefore we get 6kg sugar by 24/- 
Then
24=6kg
? =1kg
Then 1kg price is 4/- ( reduction price )
Original price:
100% = ?
80% = 4/- ( because in question he gives 20% reduction)
There fore \(\frac{(100 \times 4)}{80}\) = 5/- 

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If a commission of 20% is given on the written price, the gain is 60%.

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If a commission of 20% is given on the written price, the gain is 60%. What will be the percentage of gain if the commission is increased to 25%?

A0.5

B0.37

C0.62

D0.8

Nithin K ? Apr 2 '2018 at 21:37

Answer is : 0.5

Explanation:

Let the written price = Rs.100
commission = Rs.20
selling price = 100-20 = Rs.80

gain = 60%

cost price =\(\frac{80\times100}{160}\)= Rs.50

if the commission is increased to 25%,
selling price = 100-25 = Rs.75

new gain =\(\frac{(75−50)\times100}{50}\)=50%

 = 0.5

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Anil sells two houses at the same prices. On one he makes a profit of 10%

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Anil sells two houses at the same prices. On one he makes a profit of 10% and on the other he suffers a loss of 10%. Select the correct statement.

AHe suffers a loss of 1%

BHe makes a profit of 10%

CHe makes a profit of 2%

DHe makes no profit no loss

Nithin K ? Apr 2 '2018 at 21:5

Answer is : He suffers a loss of 1%

Explanation:

In this type of transaction, there is always a loss

 Loss percent =\(\Big (\frac{x^2}{100}\Big)\) =\( \Big[\frac{(10×10) }{ 100}\Big]\)= 1%

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In an examination, 65% of the total examinees passed. If the number of failures is 420. The total number of examinees are

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In an examination, 65% of the total examinees passed. If the number of failures is 420. The total number of examinees are

A1500

B1200

C1000

D1625

Nithin K ? Apr 2 '2018 at 20:15

Answer is 1200

Explanation:

  Percentage of failures = (100 − 65)% = 35%

 Let the total number of examinees be x.

Then,

 \(35\text{% of x} =420 \implies \frac{35}{100} \times x = 420\)

\(\implies x = \Big[420 \times \frac{100}{35}\Big] =1200\)

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