Answer is 8 years old
Solution:
Alice is two years older than Bella
Alice = Bella + 2 ----(1)
Bella has three-quarters the age of alice
Bella = 3/4 Alice ----(2)
then put (2) into (1)
Alice = 3/4 Alice + 2 ----(3)
Alice-3/4 Alice = 2
1/4 Alice = 2
so Alice = 8