MATHS
posted by NISHI on .
A SUM OF MONEY IS KEPT IN A BANK AT 8% INTEREST COMPOUNDED ANNUALLY.HAD THE INTEREST BEEN AT 10% COMPOUNDED SEMI ANNUALLY THE AMOUNT AFTER 1 YEAR WOULD HAVE BEEN 225 MORE.WHAT WAS THE PRINCIPAL AMOUNT KEPT IN THE BANK?

let the amount be x
x(1.05)^2  x(1.08) = 225
x(1.05^2  1.08) = 225
x = 10000