tolong dong nomor 3,4,4,4, plis tolong

4.diketahui:kentang=5,5kg=55/10
tomat=1 3/4=7/4
kentang yg busuk=1/4
(55/10+7/4)-1/4=(220/40+70/40)-1/4=290/40-1/4=290/40-10/40=280/40= 7 kg