tolong di bantu yaa nmr 1-5 yang C pakai caranya...mksh

No 1 = dari tertua 1/3 (Dila)
Lalu 1/6 (Dodi)
Termuda 1/9 (Novi)
No 2 = anak-anak : 2/3 x 5= 10/15
Orang tua : 1/5 x 3= 3/15
Remaja :? 10-3= 2
= 2/15 remaja
No 3 = Wortel : 1/4
Kentang :1/2x2=2/4
Sawi : 2/4-1/4= 1/4
Jadi luas lahan yng ditanami sayur 1/4 hektare
No 4 = 1/2 kg - 1/4 kg + 1/3 kg
= 1/2 x 6, 1/4 x 3, 1/3 x 4
= 6/15 - 3/12 + 4/12
= 3/12+4/12=7/12
Sisa gula pasir ibu = 7/12 kg
No 5 = 2/5 km + 3/10 km + 1/4 km
= 2/5 x 4, 3/10 x 2, 1/4 x 5
= 8/20 + 6/20 + 5/20
= 19/20 km