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The amount of water (in ml) that should be added to reduce9 ml lotion, containing 50% alcohol,to a lotion containing 30% alcohol, is:

  • Option 1)

    5 ml    

  • Option 2)

    2 ml    

  • Option 3)

    3 ml    

  • Option 4)

    6 ml

  • Option 5)

    4 ml    

9 ml solution = 50 % alcohol = 4.5 ml

Let x\: ml added (4.5 + x) = water and alcohol \frac{4.5}{9}+x = \frac{30 }{100}

45 = 27+3x

X= 6ml

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Posted by

rishi.raj

A shepherd had n goats in the year 2000. In 2001 the no. of goats increased by 40%. In 2002 the no. of goats declined to 70%. In 2003 the no. of goats grew by 30%. In 2004, he sold 10% goats, and then he had only 34398 goats. The percentage increase of the no. of goats in this duration was:

  • Option 1)

    14.66%

  • Option 2)

    16.66%

  • Option 3)

    20%

  • Option 4)

    25%

  • Option 5)

    33.33%

There is no need to use the no of goats i.e (34,398). let initially thete be 1000 goats then

1000\rightarrow 1400\rightarrow 980\rightarrow 1274\rightarrow 1146.6

Thus the % increase =\frac{1146.6-1000}{1000}\times 100=14.66\; ^{0}/_{0}

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Posted by

rishi.raj

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Dell computers has two branches : One in ohio and second in texas : The total no. of employees on ohio office grew this year by 25% to 750 but the ratio of male to female employee is same as in the previous year. The no. of employees in the Texas office grew this year by 9.09% to 1200. The ratio of male to female employees last year in texas office was 5:6 and the number of male employees in the ohio office was 20% less than that of texas office.

The total number of female employees this year in both the offices is:

  • Option 1)

    654

  • Option 2)

    659

  • Option 3)

    950

  • Option 4)

    can’t be determined

  • Option 5)

    546

Cannot be determined

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Posted by

rishi.raj

The price of a P&G product is collectively decided by five input factors viz. research, raw materials, labour, advertisements and transportation. The functional relationship of price with these factors is: Price = (k × Research costs × Raw material costs × Labour costs × Advertising cost × Transportation cost) if there are respective changes of 10%, 20%, -20%, 25% and 50% in the five factors, then find the change in the price of product.

  • Option 1)

    85%

  • Option 2)

    95%

  • Option 3)

    98%

  • Option 4)

    80%

  • Option 5)

    none of these

Let initial Price be = 100

Final = 100\times \left ( \frac{110}{100} \right )\times \left ( \frac{120}{100} \right )\times \left ( \frac{80}{100} \right )\times \left ( \frac{125}{100} \right )\times \left ( \frac{150}{100} \right )

\Rightarrow 198

\Rightarrow  Change 198 - 100 = 98 %

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Posted by

admin

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Out of the 75 students enrolled in the Economics class, 12% did not qualify to take the final examination on account of lack of attendance. Of those who qualified to take the test, 9.09% absented themselves from the exam. Two-third of those who took the exam passed the examination. 75% of those who passed secured a first class in the paper. How many students who pass the exam scored less than first class?

  • Option 1)

    15

  • Option 2)

    10

  • Option 3)

    14

  • Option 4)

    None of these

  • Option 5)

    12

Number of students who passed the exam but scored less than 1st class =

75\times \frac{88}{100}\times \frac{90.91}{100}\times \frac{2}{3}\times \frac{1}{4}=10

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Posted by

admin

A shepherd had n goats in the year 2000. In 2001 the no. of goats increased by 40%. In 2002 the no. of goats declined to 70%. In 2003 the no. of goats grew by 30%. In 2004, he sold 10% goats, and then he had only 34398 goats. In which year the no. of goats was minimum?

  • Option 1)

    2001

  • Option 2)

    2007

  • Option 3)

    2004

  • Option 4)

    2003

  • Option 5)

    No idea

2003

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Posted by

Raghav goyal

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An alloy contains the copper and aluminum in the ratio 7:4. While making the weapons from this alloy, 12% of the alloy get destroyed. If there are 12 kg of aluminum in the weapon, then the weight of the alloy required is :

  • Option 1)

    45kg

  • Option 2)

    40kg

  • Option 3)

    37.5 kg

  • Option 4)

    14.4 kg

  • Option 5)

    48 kg

Copper : Aluminum = 7 : 4

\left ( \frac{88}{100} \right )\times \left ( \frac{4x}{11} \right )=12

x=37.5\, Kg

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Posted by

rishi.raj

Out of a no. of electronic items, a person purchases 60% colored TVs 5% of these were found to be defective. The percentage of defective TVs in all is

  • Option 1)

    3%

  • Option 2)

    6%      

  • Option 3)

    10%

  • Option 4)

    can’t be determined

  • Option 5)

    12%

% of defective TV = 5% of 60% of 100

\Rightarrow 3%

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Posted by

rishi.raj

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Fresh fruit contains 68% water and dry fruit contains 20% water. How much dry fruit can be obtained from 100 kg of fresh fruits ?

  • Option 1)

    20

  • Option 2)

    60

  • Option 3)

    40

  • Option 4)

    50

  • Option 5)

    30

32% of fresh fruit = 80% of dry fruit

32% of 100 = 80%  of X

X = 40 kg .

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Posted by

rishi.raj

Gaurav spends 30% of his monthly income on food articles, 40% of the remaining on conveyance and clothes and saves 50% of the remaining. If his monthly salary is Rs.18,400, how much money does he save every month?

  • Option 1)

    3864

  • Option 2)

    4903

  • Option 3)

    5091

  • Option 4)

    6789

  • Option 5)

    5849

Saving =   18400\times \left ( \frac{70}{100} \right )\times \left ( \frac{60}{100} \right )\times \left ( \frac{50}{100} \right )

\Rightarrow  3864 .

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Posted by

rishi.raj

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