Percentages

    If 20% of 40% of a = 25% of a% of b, then what is b?

    If 20% of 40% of a = 25% of a% of b, then what is b?

    1. 8/5              

    2. 16/25                      

    3. 8/25            

    4. None

    Ans: 3

    Solution:

    1/5 X 2/5 X a = ¼ X a X b  =>  b = 8/25

    If 20% of 40% of a = 25% of a% of b, then what is b?- IBPS Preparation

    By what % is 200 more than 50?

    By what % is 200 more than 50?

    1 100             

    2. 200                         

    3. 300             

    4. None

    Ans: 3

    Solution:

    % difference = (200-50)/50 X 100 = 300 %

    By what % is 200 more than 50?- IBPS Preparation

    In an election between two candidates, A and B, A secured 56% of the votes and won by 48000 votes. Find the total number of votes polled if 20% of the votes were declared invalid.

    In an election between two candidates, A and B, A secured 56% of the votes and won by 48000 votes. Find the total number of votes polled if 20% of the votes were declared invalid.

    1. 500000       

    2. 400000                   

    3. 600000       

    4. None

    Ans: 1

    Sol:

    A got 56%  =>  B got 44%

    Difference = 12% = 48000

    So, 100% = 400000. These are valid votes.

    But valid votes are only 80% of total votes.

    So, 80% of total votes  = 400000  =>  total votes = 500000

    In an election between two candidates, A and B, A secured 56% of the votes and won by 48000 votes. Find the total number of votes polled if 20% of the votes were declared invalid.- IBPS Preparation

    If the length of a rectangle is increased by 33.33%, by what percentage should the breadth be reduced to make the area same?

    If the length of a rectangle is increased by 33.33%, by what percentage should the breadth be reduced to make the area same?

    1. 20%           

    2. 33.33%                   

    3. 25%            

    4. None

    Ans: 1

    Sol:

    It is equivalent to 1.25 decreased to 1. So 20% decrease.



    If the length of a rectangle is increased by 33.33%, by what percentage should the breadth be reduced to make the area same?- IBPS Preparation

    The price of petrol is increased by 25%. By what percent the consumption be reduced to make the expenditure remain the same?

    The price of petrol is increased by 25%. By what percent the consumption be reduced to make the expenditure remain the same?

    1. 25%           

    2. 33.33%                   

    3. 20%            

    4. None

    Ans: 2

    Sol:

    It is equivalent to 1.25 decreased to 1.

    % decrease = (1.25-1)/1.25 X 100 = 20%


    The price of petrol is increased by 25%. By what percent the consumption be reduced to make the expenditure remain the same?- IBPS Preparation

    Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?

    Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?

    A.     57%  
    B.     60%
    C.     65%   
    D.     90%



    Correct Answers is : Option A

    Solution :

    Total number of votes polled = (1136 + 7636 + 11628) = 20400.

    ==  Required percentage = (  11628/20400 * 100 ) % = 57%.

    Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?- IBPS Preparation
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