Answer: 45000

Explanation:

Let her income on January be “x”

Given that,

Jan to Feb its increased by 10%, So her income in February is 1.1x

Similarly, her income increased by 10% from Feb to March.

1.1x+\frac{10}{100}(1.1x)=1.21x

Given that,

x+1.1x+1.21x=148950

3.31x=148950

x = 45000

Hence the answer is 45000.