Points A, B, and C are at the distance of 120, 104.66 and 112 km from point M respectively. Three people left these points for point M simultaneously : the first person started from point A, the second from B and the third from C. The first person covered the whole way at a constant speed and arrived at M an hour before the second and the third persons (who arrived simultaneously). The third person covered the whole way at a constant speed. The second person, having traveled 72 km at the same speed as the first, stopped for 2 hours. The rest of the way he traveled at a speed that is less than the speed of the third person by the same amount as the speed of the third is less than that of the first. Determine the speed of the first person.
View solution