Bar graph


Direction: The bar chart given below shows the % distribution of the production of various models of a mobile manufacturing company in 2007 and 2008. The total production in 2007 was 35 Lakh mobile phones and in 2008 the production was 44 Lakhs.
Study the chart and answer the following questions. % of 6 different types of mobiles manufactured by a company over 2 years.

  1. What was the difference in the number of B type mobiles produced in 2007 and 2008?









  1. View Hint View Answer Discuss in Forum

    Required difference = The number of B type mobiles produced in 2007 - The number of B type mobiles produced in 2008

    Correct Option: A

    Given:- The total production of mobile phones in 2007 = 35 Lakh
    The total production in 2008 = 44 Lakh
    Percentage of B type mobiles produced in 2007 = 20%
    Percentage of B type mobiles produced in 2008 = 15%
    Required difference = The number of B type mobiles produced in 2007 - The number of B type mobiles produced in 2008
    Required difference = ( The total production in 2008 x Percentage of B type mobiles produced in 2007 ) - ( The total production of mobile phones in 2007 x Percentage of B type mobiles produced in 2008 )
    = 44 x 20% - 35 x 15%

    =44 x 20- 35 x 15
    100100

    =880 - 525= 355 Million = 355000
    100100


  1. If 85% of the D type mobiles produced in each year were sold by the company, how many D type mobiles remained unsold?









  1. View Hint View Answer Discuss in Forum

    Required answer = The total production of mobile phones in 2007 of 10% of 15% + The total production in 2008 of 10% of 15%

    Correct Option: C

    Given:- The total production of mobile phones in 2007 = 35 Lakh
    The total production in 2008 = 44 Lakh
    If 85% of the D type mobiles are sold , so 15% remain unsold.
    Required answer = The total production of mobile phones in 2007 of 10% of 15% + The total production in 2008 of 10% of 15%

    = 35 x10x 15 + 44 x 10 x 15 Million
    100100100100

    =150x 79 = 1.1850 Million
    10000

    =118500


  1. For which models was the percentage variation in production from 2007 to 2008 the maximum?









  1. View Hint View Answer Discuss in Forum

    In Model ,
    Percentage Variation

    =Total increasex 100%
    Production in 2008

    Correct Option: D

    As per given table , we can see that
    For A , Production in 2007 = 40 , Production in 2008 = 30
    Total increase = Production in 2007 - Production in 2008
    = 40 - 30 = 10
    In Model ,
    Percentage Variation

    =Total increasex 100%
    Production in 2008

    Model A ⇒10x 100 = 33 1
    303

    Simillarly , For B , Production in 2007 = 20 , Production in 2008 = 15
    Total increase = Production in 2007 - Production in 2008
    = 20 - 15 = 5
    Model B ⇒5x 100 = 33 1
    153

    For C , Production in 2007 = 15 , Production in 2008 = 20
    Total increase = Production in 2007 - Production in 2008
    = 15 - 20 = -5
    Model C ⇒-5x 100 = - 25
    20

    Hence required answer will be A and B models.


  1. If the percentage production of A type mobiles in 2008 was same as that in 2007, then the number of A type mobiles produced in 2008 would have been









  1. View Hint View Answer Discuss in Forum

    Required Production = The total production in 2008 x % 0f production of A type mobiles in 2007

    Correct Option: B

    Given:- The total production in 2008 = 44 Lakh
    Percentage of production of A type mobiles in 2007 = 30%
    Required Production = Percentage of production of A type mobiles in 2007 x The total production in 2008
    = 30% of 44

    Required Production =
    44 x 30
    = 13,20,000 Million
    100


  1. Total number of mobiles of models A, B and E manufactured in 2007 was









  1. View Hint View Answer Discuss in Forum

    Required answer = Number of mobiles of models A manufactured in 2007 + Number of mobiles of models B manufactured in 2007 + Number of mobiles of models E manufactured in 2007

    Correct Option: C

    Given:- The total production of mobile phones in 2007 = 35 Lakh
    Percentage of A type mobiles produced in 2007 = 30%
    Percentage of B type mobiles produced in 2007 = 15%
    Percentage of E type mobiles produced in 2007 = 15%
    Required answer = Number of mobiles of models A manufactured in 2007 + Number of mobiles of models B manufactured in 2007 + Number of mobiles of models E manufactured in 2007
    Required answer = 30% of The total production of mobile phones in 2007 + 15% of The total production of mobile phones in 2007 + 15% of The total production of mobile phones in 2007

    =35 x 30+ 35 x 15 + 35 x 15
    100100100

    =35(30 + 15 + 15) = 35 x 60 = 21 Million
    100100