The difference between the number away fans at the semi final and at the final is: 50 fans
How to interpret the number table?
The number table is given as:
Total Number of Fans Ratio of Home Fans to Away Fans
Semi Final 250 6:4
Final 500 7:3
The number of away fans at the semi final is:
4/(6 + 4) * 250 = 100 fans
The number of away fans at the final is:
3/(7 + 3) * 500 = 150 fans
the difference between the number away fans at the semi final and at the final = 150 - 100 = 50 fans