Exams


Q:

A mixture of 70 litres of Fruit Juice and water contains 10% water. How many litres of water should be added to the mixture so that the mixture contains 12.5% water   ?

A) 2 lit B) 4 lit
C) 1 lit D) 3 lit
 
Answer & Explanation Answer: A) 2 lit

Explanation:

Quantity of fruit juice in the mixture = 70 - [70 x (10/100) ]= 63 litres.

 

After adding water, juice would form 87.5% of the mixture.

 

Hence, if quantity of mixture after adding x liters of water, [(87.5) /100 ]*x = 63 => x = 72 

 

Hence 72 - 70 = 2 litres of water must be added.

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Filed Under: Alligation or Mixture
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Q:

Two goods trains each 520 m long, are running in opposite directions on parallel tracks. Their speeds are 42 km/hr and 36 km/hr respectively. Find the time taken by the slower train to cross the driver of the faster one ?

A) 60 sec B) 48 sec
C) 45 sec D) 34 sec
 
Answer & Explanation Answer: B) 48 sec

Explanation:

Relative speed = 42 + 36 = 78 km/hr = 653 m/s

Distance = (520 + 520) =1040 mts.

Time = 1040×365= 48 sec

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Filed Under: Problems on Trains
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Q:

Read the following table carefully and answer the questions given below:

 

The percentage change in sales of 6 departmental stores from 2010 to 2012 is shown in the following table:

 

 

In store T the sales for 2011 amounted to about what percentage of the sales for 2012?

A) 113 B) 109
C) 105 D) 101
 
Answer & Explanation Answer: B) 109

Explanation:
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Filed Under: Table Charts
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Q:

P alone can complete a piece of work in 6 days. Work done by Q alone in one day is equal to one-third of the work done by P alone in one day. In how many days can the work be completed if P and Q work together  ?

A) 5 (2/3) B) 6 (3/4 )
C) 4 (1/2) D) 3
 
Answer & Explanation Answer: C) 4 (1/2)

Explanation:

Work done by P alone in one day = 1/6th of the total work done by Q alone in one day = 1/3(of that done by P in one day) = 1/3(1/6 of the total) = 1/18 of the total. 

 

Work done by P and Q, working together in one day = 1/6 + 1/18  = 4/18 = 2/9 

 

They would take 9/2 days = 4 (1/2) days to complete the work working together.

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Filed Under: Time and Work
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Q:

Select the figure that does NOT belong in the following group.

 

 

 

A) D B) A
C) C D) B
 
Answer & Explanation Answer: A) D

Explanation:
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Filed Under: Image Analysis
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Q:

During rainy season wooden doors are difficult to open or closure because of  ?

A) Imbibition B) Plasmolysis
C) Diffusion D) Osmosis
 
Answer & Explanation Answer: A) Imbibition

Explanation:
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Filed Under: Biology
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Q:

Read the statement and select a conclusion from the given alternatives.

 

Statement :

 

Company 'X' had asked its employees to declare income and assets but it has strongly opposed by the employees' his/her union and no employee is going to declare his/her income.

 

Conclusions :

 

I. The employees of the company 'X' do not seem to have any additional income besides their salary.

II. The employees' union want all the senior officer to declare their income first.

 

A) Only conclusion I follows B) Only conclusion II follows
C) Either I or II follows D) Neither I nor II follows
 
Answer & Explanation Answer: D) Neither I nor II follows

Explanation:
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Filed Under: Statement and Conclusions
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Q:

Pen name of Rabindranath Tagore?

A) Bhanu Simha B) Gurudev
C) Kabiguru D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Pen names have had a certain place of their own in the world of writing. Pen names are something which every writer comes across at some time in their careers.

 

Indian author to use a pen name Bhanu Simha is Rabindranath Tagore. He also has Gurudev, Kabiguru as his pen names.

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Filed Under: Famous Personalities
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