Ritu had 400 mangoes. She sold 60 mangoes at 25% gain, 80 mangoes 20% gain, 120 mangoes at 10% gain and 140 mangoes at 20% loss. Her net gain/loss percent is:
1
\(7 \frac{1}{2} \%\) gain
2
\(4 \frac{3}{4} \%\) loss
3
\(3 \frac{3}{4} \%\) gain
4
None of these