Componendo: if $\dfrac{a}{b} = \dfrac{c}{d}$, then

1. $\dfrac{a + b}{b} = \dfrac{c + d}{d}$
2. $\dfrac{a - b}{b} = \dfrac{c - d}{d}$
3. $\dfrac{a}{b - a} = \dfrac{c}{d - c}$
4. $\dfrac{a}{c} = \dfrac{b}{d}$

Solution

Asked in: MH-SSC-9

Practice more Ratio and Proportion questions on Aicharya