Some mangoes are purchased at the rate of 8 mangoes/Rs and some more mangoes at the rate of 6 mangoes/Rs, investment being equal in both the cases. Now, the whole quantity is sold at the rate of 3.5 mangoes/Rs What is the net percentage profit/loss? 1) 100% profit 2) 60% loss 3) 80% loss 4) no profit/no loss 5) None of these