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If $${\text{A}}:{\text{B}} = \frac{1}{2}:\frac{3}{8}{\text{,}}$$    $${\text{B}}:{\text{C}} = \frac{1}{3}:\frac{5}{9}$$   and $${\text{C}}:{\text{D}} = \frac{5}{6}:\frac{3}{4}{\text{,}}$$     then find the ratio of A : B : C : D = ?

A. 6 : 4 : 8 : 10

B. 6 : 8 : 9 : 10

C. 8 : 6 : 10 : 9

D. 4 : 6 : 8 : 10

Answer: Option C

Solution(By Examveda Team)

$$\eqalign{ & {\text{A}}:{\text{B}} = \frac{1}{2}:\frac{3}{8} \cr & \Rightarrow {\text{A}}:{\text{B}} = 8:6 \cr & \Rightarrow {\text{A}}:{\text{B}} = 4:3 \cr & {\text{B}}:{\text{C}} = \frac{1}{3}:\frac{5}{9} \cr & \Rightarrow {\text{B}}:{\text{C}} = 9:15 \cr & \Rightarrow {\text{B}}:{\text{C}} = 3:5 \cr & {\text{C}}:{\text{D}} = \frac{5}{6}:\frac{3}{4} \cr & \Rightarrow {\text{C}}:{\text{D}} = 20:18 \cr & \Rightarrow {\text{C}}:{\text{D}} = 10:9 \cr & {\text{A}}:{\text{ B }}:{\text{C }}:{\text{D}} \cr & 4{\text{ }}:{\text{ }}3 \cr & \,\,\,\,\,\,\,\,\,\,3{\text{ }}:{\text{ }}5 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,10{\text{ }}:{\text{ }}9 \cr & \overline {\underline {{\text{ }}8{\text{ }}:6{\text{ }}:10{\text{ }}:{\text{ }}9{\text{ }}} } \cr} $$

This Question Belongs to Arithmetic Ability >> Algebra

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Comments ( 10 )

  1. Hajra Aslam
    Hajra Aslam :
    3 years ago

    sr ans ki smjh nh ai

  2. Nikki Kumari
    Nikki Kumari :
    3 years ago

    A : B : C : D
    4 : 3
    3 : 5
    10 : 9

    Since C has different no 5 and 10 for determining the
    Ratio of A:B:C:D we should equalised the values by
    Multiplying the value 2 in
    ratio B : C = 2(3 : 5) = 6 : 10


    Now the value become
    A:B:C:D
    4:3
    6:10
    10:9
    now B has different value ie 3 and 6
    So to equalised the value we should multiply the value
    2 so
    in ratio A:B = 2(4:3) =8:6

    Now A:B:C:D
    8:6
    6:10
    10:9
    So the value become 8:6:10:9

  3. Hamza Qasim
    Hamza Qasim :
    3 years ago

    4 : 3: 3: 3 (extend right term 3 to right)
    3. : 3: 5: 5 (extend left term 3 to left and right term 5 to right)
    10:10:10:9 (extend left term 10 to left)

    Multiple as : (4*3*10=120, 3*3*10=90, 3*5*10=150, 3*5*9= 135)
    So, 120: 90: 150: 135
    8: 6: 10: 9 (after dividing above by 15)

  4. Susanta Kumar
    Susanta Kumar :
    3 years ago

    Any number of 2 multiple
    A:B=8:6=4*2:3*2=8:6
    B:C=9:15=3*2:5*2=6:10
    AB last number is 6 but
    BC first number is 6
    So CD=10:9
    A:B:C:D=
    8:6:10:9(ans)


  5. Rizwan Sher
    Rizwan Sher :
    4 years ago

    please explain the last portion?

  6. Sajjad Khosa
    Sajjad Khosa :
    4 years ago

    Please explain the question

  7. Galat Baat
    Galat Baat :
    4 years ago

    Please explain the last part of the solution?

  8. Omihasan Reman
    Omihasan Reman :
    4 years ago

    Option check probably

  9. Shantonu Angon
    Shantonu Angon :
    4 years ago

    Please explain the last part of the solution

  10. Hetal Prajapati
    Hetal Prajapati :
    5 years ago

    I can't understand

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