Jawabanmu

2014-01-04T01:05:28+07:00
P : Q
2 phi RP/T = 2 phi RQ/T
360 x 4 / 24 = 360 x 9 / T
60 = 3240 / T
T= 3240 / 60
T= 54

jadi periode palnet P = 54 hari
2014-01-04T08:06:15+07:00
Pake rumus perbandingan
p=4x
q=9x
tp=24 hari
tp2/rp2=tq2/rq2==>576/16x2=tq2/81x2
36=tq2/81
tq2=2916
tq=46.86hari