If I sell four-fifth of 10 apples, then apples are left.
45 of 10 =45×10=4×2=8 ∴ Four-fifths of 10 apples is 8 apples. Hence number of apples left = 10−8=2
If I sell four-fifth of 10 apples, how many are left?
If I sell 45 of 10 apples, how many are left?