Using M_1D_1 = M_2D_2, 15 x 20 = 25 x D_2, 300 = 25 x D_2, D_2 = 12 days.
M_1D_1 = M_2D_2 का उपयोग करते हुए ⇒ 15 x 20 = 25 x D_2, 300 = 25 x D_2, D_2 = 12 दिन।