Question

yash invest 1200 in scheme A ,which offers a compd interest at rate of 20% for 2 yrs.he invested a certain sum in scheme B which offers simple interest at rate of 15 % for a period of 3 year. interest received from scheme A Is 42rs more than that received from scheme B.the sum invested in scheme B was what % of that?

Answer 1

If the amounts invested are a and b, we are told that

1200(1.20)^2 = b(1+.15*3) + 42
b = 1162.76

Now you ask what percent is B of "that". No idea what you mean, but if you want the percent of the total amount invested, that would be

b/(a+b) = 1162.76/2362.76 = .4921 = 49.21% of the total.