Question

Sum of the ages of Monali and Sonali is 29 years. Monali is younger than Sonali by 5 years.

Answer 1

$$\begin{gathered} \mathrm{Let}\mathrm{the}\mathrm{age}s\mathrm{of}\mathrm{Monali}\mathrm{and}\mathrm{Sonali}\mathrm{be}x\mathrm{years}\mathrm{and}y\mathrm{years},\mathrm{respectively}. \\ \mathrm{Sum}\mathrm{of}\mathrm{their}\mathrm{ages}=29\mathrm{years} \\ \therefore x+y=29 \\ \mathrm{According}\mathrm{to}\mathrm{the}\mathrm{question}, \\ x=y-3 \\ \therefore x-y=-3 \end{gathered}$$