Gujarat BoardEnglish MediumSTD 7MATHSRatio and Proportion1 Mark
Question
If A : B = 5 : 7 and B : C = 6 : 11, then A : B : C = ______.
✓
Answer
If A : B = 5 : 7 and B : C = 6 : 11, then A : B : C = 30 : 42 : 77. Solution: $\frac{\text{A}}{\text{B}}=\frac{5\times6}{7\times6}=\frac{30}{47}$ $\Rightarrow\frac{\text{B}}{\text{C}}=\frac{6\times7}{11\times7}=\frac{42}{77}$ $\Rightarrow\text{A : B :}=30:42:77$
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