Mathmetics

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

Q51.
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 ratio of the number of years, in which the foreign exchange reserves are above the average reserves, to those in which the reserves are below the average is:
1) 2:5 2) 3:5
3) 3:4 4) 4:7
5)None of these
Answer : 3:5
Explanation :
Average foreign exchange reserves over the given period is = 3480 million US $

The country had reserves above 3480 million US $ during the years 1992-93, 1996-97 and 1997-98. So three years is was above the average and for rest of five years it was below the average
So required ratio is 3:5
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Q52.
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. 

:
FOr which year, the percent increase of foreign exchange reserves over the previous year is the highest ?
1) 1992-93 2) 1994-95
3) 1995-96 4) 1998-99
5)None of these
Answer : 1992-93
Explanation :

Lets calculate the percentage increase of these years compared to previous years :
For year 1992-93 =(3720−2640)/2640 x100 = 40.91%
For year 1994-95 = (3360−2520) /2520 x100 = 33.33%
For year 1996-97 = (4320−3120) /3120x100 = 38.46%
For year 1997-98 = (5040−4320) /4320∗100 = 16.67%
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Q53.
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. 

:

What was the percentage increase in the foreign exchange reserves in 1997-98 over 1993-94 ?
1) 85% 2) 90%
3) 100% 4) 105%
5)None of these
Answer : 100%
Explanation :
Foreign exchange reserve in 1997-98 = 5040 million US $

Foreign exchange reserve in 1993-94 = 2520 million US $

Increase = 5040 - 2520 = 2520 million US $

So, the percentage Increase =(2520 / 2520) x100 = 100%
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Q54.
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 1997-98 was how many times that in 1994-95

1) 1.2 2) 1.5
3) 2.5 4) 3
5)None of these
Answer : 1.5
Explanation : Required Ratio = 5040 / 3360 = 1.5
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Q55.
Direction : Study the following pie - chart and the table and answer the questions based on them.

Proportion of Population of Seven Villages in 2013.
                
 Village             % Population Below Poverty Line
        X                               38
        Y                               52
        Z                               42
        R                               51
        S                               49
        T                               46
        V                               58 

Find the population of village S if the population of village X below poverty line in 2013 is 12160.
    
1) 16500 2) 18500
3) 20100 4) 22000
5)None of these
Answer : 22000
Explanation :
Let, the population of village X be x.
Then, 38% of x = 12160   =>   x = (12160 x 100) /38 = 32000.
Now, if s be the population of village S, then
16 : 11 = 32000 : s     =>    s =(11 x 3200) /16= 22000.
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Q56.
Direction : Study the following pie - chart and the table and answer the questions based on them.

Proportion of Population of Seven Villages in 2013.


     

    Village             % Population Below Poverty Line
        X                               38
        Y                               52
        Z                               42
        R                               51
        S                               49
        T                               46
        V                               58

The ratio of population of village T below poverty line to that of village Z below poverty line in 2013 is:
1) 11:21 2) 11:23
3) 12:13 4) 23:11
5)None of these
Answer : 23:11
Explanation :
Let, N be the total population of all the seven villages.
Then, population of village T below poverty line = 46% of (21% of N) and Population of villages Z below the poverty line = 42% of (11% of N)
Therefore, required ratio = 46% of (21% of N) / 42% of (11 % of N)= (46 x 21) /(42 x 11)
= 23/11.

View Answer

Q57.
Direction : Study the following pie - chart and the table and answer the questions based on them.

Proportion of Population of Seven Villages in 2013.



     

     Village             % Population Below Poverty Line
        X                               38
        Y                               52
        Z                               42
        R                               51
        S                               49
        T                               46
        V                               58

If the population of village R in 2013 is 32000, then what will be the population of village Y below poverty line in that year ?
1) 14500 2) 15600
3) 16200 4) 17500
5)None of these
Answer : 15600
Explanation :
Population of village R = 32000 (given).
Let, the population of village Y be y.
Then, 16 : 15 = 32000 : y     => y = (15 x 32000)/16= 30000.
Therefore ,Population of village Y below poverty line = 52% of 30000 = 15600.
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Q58.
Directions : Study the following bar-graph and answer the questions given below.
Number of Bike A and B type sold over the years in thousand.



Number of bikes of B type in year 2007 is what percent of total number of bikes of B type in all the years together ?(Round off to two digits after decimal).
1) 6.5% 2) 7.5%
3) 8% 4) 12%
5)None of these
Answer : 7.5%
Explanation :
B type in 2007 =15000
B type in all years together = 2,00,000
Percent = [15000 / 200000] x100 = 7.5%
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Q59.
Directions : Study the following bar-graph and answer the questions given below.
Number of Bike A and B type sold over the years in thousand.




What is the ratio between the total number of bikes of A in year 2004, 2006 and 2007 together and the total number of bikes of B in year 2002, 2004 and 2005 ?
1) 1:2 2) 2:1
3) 2:3 4) 3:4
5)None of these
Answer : 1:2
Explanation :
Total number of bikes of A type in  year 2004, 2006, 2007 = 10,000 + 20,000 + 25,000 = 55,000
Total number of bikes of B type in year 2002, 2004, 2005 = 20,000 + 35,000 + 55,000= 1,10,000
So,ratio = 55,000 : 1,10,000 = 1:2

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Q60.
Direction : Study the following bar chart and answer the questions carefully.

Sales Turnover of 5 Companies (in Rs. crores)


What should have been the sales turnover of GM in 2002 - 2003 to have shown an excess of the same quantum over 2001 - 2002 as shown by the sales turnover of Maruti ?

1) 956.46 2) 958.96
3) 962.76 4) 972.76
5)None of these
Answer : 962.76
Explanation :
GM should have increased its sales turnover by Rs.49.13 crore. Hence, the answer is 913.63 + 49.13 = 962.76.
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