Given,
Total weight =10kg
Weight of onions =3kg500g=3.5kg
Weight of tomatoes =2kg75g=2.075kg [To convert gtokg divide by 1000]
Let weight of potato be x
⇒3.5+2.075+x=10 [ sum of all=10kg]
⇒5.575+x=10
⇒x=10−5.575
⇒x=4.425kg
∴x=4kg 425g
Thus, weight of potatoes =4kg 425g