nvestment40$, the first two weeks get 42$. If the next 6 weeks keep 8 times the simpleinterests as first two weeks. Q= how much earning after six weeks?
(提供者ID:jannyguo 。Answeris 59.8 or 58.8 ….
思路:
前两周利率:(42-40)/40=5%
后六周利率:5%*8=40%
投资40,最后得到42*(1+40%)=58.8