180 lt : 20 menit =......lt/jam

20=20/60 jam =1/3 jam
jadi = 180/(1/3)
= 180×3/1
= 540 lt/jam

itu jawaban saya semoga benar

180 liter : 20 menit = .... liter/jam
180 liter = 180 liter
20 menit = ... jam
20 : 60 = 1/3 jam
180/1/3 = 180×3/1 = 540 liter/jam
Jadi, 180 liter/20 menit = 540 liter/jam