6. Mrinalini and Neha travel to Connaught Place along two straight roads with constant speeds. At the initial moment, the positions of Mrinalini, Neha, and Con- naught Place form a right triangle. After Mrinalini travelled 30 km, the triangle between the points be- came equilateral. Find the distance between Mrin- alini and Neha at the initial moment, if at the time Mrinalini arrived at Connaught Place, Neha had to cover 6.66 km to reach Connaught Place.