Respostas

2013-12-03T10:42:59-02:00
Ft = 4+2+5+2+3+4+2+3
Ft = 25
Fr = 4/25, 2/25, 5/25, 2/25, 3/25, 4/25, 2/25, 3/25
= 16%, .....8%,. 20%,. 8%, .12%, 16%, 8%, 12%