A man invested Rs X X X in scheme A and Rs ( X + 400 ) (X + 400) ( X + 400 ) in scheme B. The rate of interest for scheme A is 10% per annum and for s...
Question
A man invested Rs in scheme A and Rs in scheme B. The rate of interest for scheme A is 10% per annum and for scheme B is 12% per annum. If the total interest earned from scheme A after 4 years and scheme B after 2 years is Rs 640, find the value of .