nomor 16 ta ka. pake cara

1/Rp = 1/(R2 + R3) + 1/(R4 + R5) + 1/R6
1/Rp = 1/(8 + 12) + 1/(10 + 20) + 1/60
1/Rp = 1/20 + 1/30 + 1/60
1/Rp = 3/60 + 2/60 + 1/60
1/Rp = 6/60
Rp = 60/6
Rp = 10 ohm.

Rs = R1 + R7 = 40 ohm + 50 ohm = 90 ohm (C)

Rtot = Rp + Rs = 10 ohm + 90 ohm = 100 ohm