Answer:
→Loss=Rs100
Explanation:
Solution,
→CP of a quintal of potatoes=Rs4000
→Sp of a quintal of potatoes=Rs390 per 10kg
→SP of 1 kg of potatoes=rs390/10=Rs39
→SP of 100kg(a quintal)=Rs39 x 100=Rs3900
Here,
→SP<CP=Loss
→Loss=CP-SP
→Loss=Rs4000-Rs3900
→Loss=Rs100