Abhay borrowed some money from Ajay at 15% per annum simple interest. He then added some more amount and lent to Vijay at 20% per annum simple interest. At the end of the year, the difference between the interest received and paid by Abhay is Rs.325. If Abhay lent Rs.3500 to Vijay, then how much loan did Abhay take from Ajay?
Interest on vijay
Let X is the principal on abhay
Difference of interest