Question 1031877
A = cost of trip A
B = cost of trip B
C = cost of trip C = 2850


C = 2B - 1750
2850 = 2B - 1750
2B = 4600
B = 2300


B = 2A - 200
2300 = 2A - 200
2A = 2500
A = 1250


Trip A costs $1250.