As per question,
So, net amount babita paid =48×160=Rs. 7680
She sold 70% of mangoes at Rs. 70 per kg
So, cost of 705 of mangoes =160×70100×70=Rs. 7840
Net amount received after selling mangoes,
=7840+1920=Rs. 9760
We know that, SP>CP. So, there is a gain;
Gain =SP−CP=9760−7680=2080
Again, we know that,
Gain percentage =GainCP×100=20807680×100=27.80%