Three terminals (T1 , T2 ,T3 ) are to be connected to three computers (C1 ,C2 , C3 ) so that T1 is connected to C1,T2 to C2, and T3 to C3. All are in different cities. T1 and C1 are 1,500 miles apart, as are T2 and C2, and T3 and C3. The points T1, T2 ,and T3 are 25 miles apart, and the points C1 , C2, and C3 also are 25 miles apart. If telephone lines cost $1 per mile, what is the line cost for three?