Respuesta :

(5300 + 1335.6)  = 5300(1 + 0.07)^n   where n is the number of years required

6635.6 = 5300(1.07)^n
(1.07)^n = 1.252
n log 1.07  = log 1.252

n =  log 1.252 / log 1.07 = 3.32 years Answer