Person A lend sum of Rs. 21000 is lend into 2 parts part 1 is lend for 3 years at 9% rate of interest for SI  and part 2 is lend for 2 years at 10% rate of interest for SI the part 1 earned interest 2380 more than the part 2. Find the difference between the amount lend by the person in part 1 and part 2.