the amount in an account which was opened 180 days ago is rm205.if the amount was offered a simple interest of 5 % per annum find the original principal?

Answer 1

180 days is 1/2 year, so
x * (1 + .05 * 0.5) = 205
now just find x

Answer 2

Po + Po*r*t = 205.
Po + Po*0.05*(180/365) = 205,
Po + 0.0247Po = 205,
Po = $200.07.