tolong 21 sama 22plizz

21) volume = 0,75 m³ - 300 ltr
= 750 - 300
= 450 liter
waktu = ¼ jam
debit = volume ÷ waktu
= 450 ÷ ¼
= 450 × 4/1
= 1.800 liter/jam (A)

22) A