tolong nomor 1 pakai cara

A 3/5 = 6/... = 27/... = .../50
kali silang pertama 3/5=6/...
3x=15
x= 5
jadi 3/5=6/5=27/...=.../50
6/5=27/...
6x=135
x=22,5
jadi 3/5=6/5=27/22.5=.../50
27×50=x×22.5
1350=22.5x
x= 60
3/5=6/5=27/22.5=60/50

B.