1000
Step-by-step explanation:
Let the share of votes obtained by the parties A, B and C be x, 2x and 4x respectively.
According to the given information:
No of votes obtained by C = 1500 + No of votes obtained by A

[(14,7 + 5,9) x 5,8] / 2 = 59,74 cm^2
It would round to 124,610