Sonny puts $200 into an account earning simple interest at 5% per year. Cher puts $220 into an account earning a constant force of interest δ. After 5 years, each account has the same accumulated value. Find δ.
(a) 2.56%
(b) 2.59% (c) 2.65% (d) 2.73% (e) 2.97%