Using the Rule of 72, how long does it take money to double at 15% interest rate?
ncG1vNJzZmivp6x7rq3ToZqepJWXv6rA2GeaqKVflrC1tdWiq7JlnZrBqbvDZpueqKKasKqt06Kmp2agnb2AvMt2fp6mlaeutbGKiamam6SesKZ3r6umm6SVog%3D%3D
ncG1vNJzZmivp6x7rq3ToZqepJWXv6rA2GeaqKVflrC1tdWiq7JlnZrBqbvDZpueqKKasKqt06Kmp2agnb2AvMt2fp6mlaeutbGKiamam6SesKZ3r6umm6SVog%3D%3D