Question

Coffee costing rs. 100 per kg was mixed with chicory costing Rs.50 per kg in the ratio 5:2 for a certain blend.if the mixture was sold at Rs 90 per kg ,find the gain or loss percent.

Answer 1

Total weight = 5+2 = 7 kg
7 kg = 5*100+2*50
1 kg = 600/7 = 85.71
Gain = 90-85.71 = 4.39
Gain percent = 4.39/85.71*100 = 5℅