Kak tolong bantu kerjakan semuanya pakai caranya yaa

13). beras bu ida = 6 1/2.3 = 19 1/2
beras bu ida selama 3hr = 1 1/4x3 = 3 3/4
sisa beras bu ida = 19 1/2-3 3/4= 15 3/4 kg

good luck