they say bongani buys 1 litre of milk and drinks a quarter of it and dey wnt to knw wht fraction of the litre of milk is left,and dey say bongani offers another 3eighths of the leftover milk to his sister bongiwe n dey wnt to knw wht fraction of de litter of milk is left

Answer 1

Someone may be able to help you IF you repost this in standard English, not text-speak.

Answer 2

they say bongani buys 1 liter of milk and drinks a quarter of it and they want to know what fraction of the liter of milk is left,and they say bongani offers another 3eighths of the leftover milk to his sister bongiwe and they want to know what fraction of the litter of milk is left

Ok,I fixed most of it I think.