Let us say a loaf of bread is Rs.10/12.

Hmmmm. A loaf of bread here is about $2.00.

A 500kms. journey to Mumbai by train A/c. coach will be approx 1300/-

500 kms is around 300 miles I think. I really have no idea what a train journey of 300 miles would be bcause we have so few trains in this part of the country < s >.