tolong jawab no 24 pakai cara ya

besar bunga = 1,260,000 - 1,200,000 = 60,000

60,000 = b/12 × 15/100 × 1,200,000
60,000 = b × 15,000
b = 60,000/15,000
b = 4 bulan

60.000 = x/12 . 15/100 . 1.200.000
60.000 = x.15.1000
x= 60.000:15.000
x=4
Lama Bima menabung adalah 4 bulan