Question

Mr Jain bake a cake she gave some of it to her neighbour and 8 1 upon 10 of cake if MRS Jain head

Answer 1

half of it is remaining ,
She ate 1/10 of the cake ..remains 9/10 .
Given in the question that after giving to neighbours, 2/5 that is 4/10 remains..she had eaten 1 /10 ..so we can understand that 5/10 of it ..that is half of it had been given to the neighbours..