Mathmetics

ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

Q41.
Directions: Study the following chart and table carefully to answer the questions that follow :
Percentage breakup of employees working in various departments of an organization and the ratio of men to women in them.
Percentage Breakup of Employees Total Number of employees = 1800


What is the number of men working in the Marketing department ?

1) 132 2) 174
3) 126 4) 189
5)None of these
Answer : 189
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Q42.
Directions: The following pie chart shows the percentage distribution of the expenditure incurred in publishing a book. Study the pie chart and answer the following questions.


If for a edition of a book, the cost of paper is Rs. 56250, then find the promotion cost for this edition ?
1) Rs 20500 2) Rs 22500
3) Rs 22800 4) Rs 23000
5)None of these
Answer : Rs 22500
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Q43.
Direction: The following Pie chart shows the percentage of Literate and Illiterate males and females in a city. Answer the question based on this pie chart.


What is the difference between the number of Literate Males and Literate Females, If total number is 2,50,000 ?
1) 3800 2) 4200
3) 5000 4) 5600
5)None of these
Answer : 5000
Explanation :
Difference = (35%of 250000) - (33% of 250000)
= (35% - 33%) of 250000  = 2% of 250000 
= (2/100) x 250000  = 5000
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Q44.
Directions: Study the following bar Graph carefully and answer the questions given bellow :

The  Bar Diagram depicting the changes in the students strength of a college in four diffrent streams from 2007-08 to 2009-10. 

      
 The Science students in the year 2009-10 is what percentage of the  students in the same year ?

1) 35% 2) 37.5%
3) 42% 4) 45.5%
5)None of these
Answer : 37.5%
Explanation : Stuents of all categories in the year 2009-10 =  
500 + 600 + 250 +250 = 1600
Numbers of Science students = 600 
So,required percentage = (600/1600) x 100 = 37.5%
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Q45.
Directions: Study the following bar Graph carefully and answer the questions given bellow :

The Bar Graph shows the percentage of three communities - A, Community B and Community C in a state during the years from 2004 to 2007. 



If the total population Community A  in 2006 is 40,000 then what will be the population of Community B in the same year ?
1) 80,000 2) 84,000
3) 96,000 4) Can't be determined
5)None of these
Answer : 96,000
Explanation : The population of Community A is 25% i.e 40,000. 

Then population of Community B = (40,000 /25) x 60 = 96,000
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Q46.
Directions: Study the following bar Graph carefully and answer the questions given bellow :

The Bar Graph shows the percentage of three communities - A, Community B and Community C in a state during the years from 2004 to 2007. 



If the total population in 2004 was 8,00,000 and in 2006 it was 9,00,000, by how much has the population of Community B increased in 2 years?

1) 25% 2) 50%
3) 75% 4) 80%
5)None of these
Answer : 50%
Explanation : 45% of 800000 is 360000 and 60% of 900000 is 540000
So, the percentage of population increases = [(540000 - 360000)/360000] x 100 = 50%
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Q47.
Directions: Study the following bar Graph carefully and answer the questions given bellow :

The Bar Graph shows the percentage of three communities - A, Community B and Community C in a state during the years from 2004 to 2007. 



If the total population of the state in 2005 was 6 million, then the population of Community A was 



Answer (b). 
1) 1800000 2) 1950000
3) 2100000 4) 2250000
5)None of these
Answer : 2100000
Explanation :
In the year 2005, the population percentage of Community A ,B and C 
= (35+55+15) % = 100%

So,the total population of Community A is (6,000,000)x(35/100) = Rs.2,100,000.
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Q48.
Directions: Study the following bar Graph carefully and answer the questions given bellow :

The Bar Graph shows the percentage of three communities - A, Community B and Community C in a state during the years from 2004 to 2007. 



If the total population of the state in 2004 was 5 lakhs, then the combined population of Community A and Community C in that year was

1) 180000 2) 200000
3) 250000 4) 275000
5)None of these
Answer : 275000
Explanation : Total population = (500000 x 55)/100 = Rs.2,75,000.
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Q49.
Directions: Study the following bar Graph carefully and answer the questions given bellow :

The Bar Graph shows the percentage of three communities - A, Community B and Community C in a state during the years from 2004 to 2007. 


What is the ratio between the population of Community A and Community B in 2004 ?
1) 1:2 2) 2:3
3) 3:4 4) 3:5
5)None of these
Answer : 2:3
Explanation : Community A : Community B = 30:45 or 2 : 3.
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Q50.
Direction: read the following the bar graph given below and give the answer:

The bar graph given below shows the foreign exchange reserves of a country (in million US $) from 1991-92 to 1998-99. 

:

The foreign exchange reserves in 1996-97 were approximately what percent of the average foreign exchange reserves over the period under review ?
1) 80% 2) 85%
3) 90% 4) 125%
5)None of these
Answer : 125%
Explanation :
The average of these 8 years =

1/8 (2640+3720+2520+3360+3120+4320+5040+3120) US $ 3480 million 

Foreign exchange reserves in 1996-97 = US $ 4320 million 

So, required Percentage = [(4320/3480)x100] % = 125%
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