Question

Two varieties of coffee costing rupees 250 per kg and rupees 75 per kg be mixed in the ratio 5 is to 2 for a certain blend if the mixture was sold at of rupees 230 per kg find the gain or loss percent

Answer 1

for 7kg price of coffee =5x250+2x75=1400
And sold price for 7kg=7x230=1610
now gaining amount =1610-1400=210
gain%=210/1400x100=15%answer