Hi kartikeya

Basically the amount of maths atleast very sufficient for course in BAeco. 

The syllabus of maths are 1. linear algebra and differential equation

2. probability and statistical interference

3.mathematical and statistical computatiing.

Economically more as taught on social science but not all job in economics require maths knowledge.

In addition to study core of mathematical methods you will study 

1. Applied analysis 

2.mechanics 

3. Numerical analysis 

4.statistics