Compare investing $250 at 8% compounded monthly for 16 years with investing $250 at 13% compounded monthly for 16 years. The final amount after investing at 8% is $

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct