Physics Question from JEE Main 2023 · 30 January, Shift 2

In a Young’s double slit experiment, the intensities at two points, for the path difference $\frac{\lambda}{4}$ and $\frac{\lambda}{3}$ (where $\lambda$ is the wavelength of light used), are $I_1$ and $I_2$ respectively. If $I_0$ denotes the intensity produced by each of the individual slits, then

$$\frac{I_1 + I_2}{I_0} = \ldots$$