There were 7 friends in a birthday party. If 3 friends ate 58 of the cake, 2 others ate 18 of the cake, then what fraction of the cake was left over for the remaining 2 friends?
28
14
Let us take the whole cake as 1.
Fraction of cake eaten =58+18=68
Fraction of cake remaining for the other two friends =1−68
=88−68
=8−68=28
=14