The value of a machine depreciates at the rate of 10% per annum. If its present value is Rs.40500, what will be its worth after 2 years? What was the value of the machine 2 years ago.

2 years later it will be 40500*(90/100)*(90/100) = 32805 2 years back it was 40500*(100/90)*(100/90) = 50000.

A man invested 2/5 of his capital at 8% per annum, 3/8 of his capital at 10% per annum and the remaining at 12% per annum. If his annual income at simple interest is Rs. 965, then what is his capital amount?