Question 1108214
Total votes cast=x
A-B=(1/8)x
B-C=(1/7)x
A=3C-350
A+B+C=x
A=B +(1/8)x from the first
B+(1/8)x+B+C=x
2B+C=(7/8)x
B-C=(1/7)x from the second
3B=(57/56)x using common denominator of 56
B=(19/56)x
Then C=(11/56)x substituting into B-C=(1/7)x
A=(26/56)x
Those three =x
A=3C-350, so (26/56)x=(33/56)x-350, and -(7/56)x=-350=(-1/8)x, so that x=2800 votes 
A got 26/56 of them or 1300
B got 19/56 of them or 950
C got 11/56 of them or 550
ANSWER