tolong dibantu beserta caranya yaa....

9][
n1 = 6, t1 = 1,5 s
n2 = 5, t2 = 1 s

periode
T = t / n

perbandingan periode
T1 : T2
= (t1 / n1) : (t2 / n2)
= (1,5 / 6) : (1 / 5)
= 1/4 × 5/1
= 5 : 4 ← jwb