Using $M_1D_1 = M_2D_2$: $15 imes 20 = 10 imes D_2 \Rightarrow 300 = 10 imes D_2 \Rightarrow D_2 = 30$ days.
$M_1D_1 = M_2D_2$ का उपयोग करते हुए: $15 imes 20 = 10 imes D_2 \Rightarrow 300 = 10 imes D_2 \Rightarrow D_2 = 30$ दिन।