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Ratio And Proportion — MATHS STD 6 — Question

Gujarat BoardEnglish MediumSTD 6MATHSRatio And Proportion1 Mark
MCQ
If $A : B = 2 : 3 B : C = 4 : 5, C : D = 3 : 7,$ then $A : B : C : D$ is.
  • A
    $2 : 3 : 4 : 7$
  • ✓
    $8 : 12 : 15 : 35$
  • C
    $24 : 36 : 45 : 105$
  • D
    None of these
✓

Answer

Correct option: B.
$8 : 12 : 15 : 35$
$A : B = 2 : 3$ or $A : B = 4 \times 2 : 4 \times 3 = 8 : 12$
$B : C = 4 : 5$ or $B : C = 4 \times 3 : 5 \times 3 = 12 : 15$
$C : D = 3 : 7$ or $C : D = 3 \times 5 : 7 \times 5 = 15 : 35$
$\therefore$ $A : B : C : D = 8 : 12 : 15 : 35$

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