7. Coffee costing * 250 per kg was mixed with chicory costing 75 per kg in the ratio 5:2 fora
certain blend. If the mixture was sold at 7 230 per kg, find the gain or loss per cent.
Hint. Let 5 kg of coffee be mixed with 2 kg of chicorn
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Answer:
cost of coffee=250 per kg.
cost of chicory =75 per kg
coffee: chicory 5:2
if the weight of mixture is 1 kg.
7
5x+2x
=1
⇒7x=7
⇒x=1
∴ weight of coffee =
7
5x
=
7
5
kg
weight of chicory =
7
2x
=
7
2
kg
cost of
7
5
kg coffee =
7
5
×250=
7
1250
cost of
7
2
kg chicory =
7
2
×75=
7
150
total cost of 1 kg mixture =
7
1250
+
7
150
cost price of 1 kg mixture =
7
1400
=200 Rs
selling of 1 kg minute = 230 Rs
gain or loss =
CP
SP−CP
×100=
200
230−200
×100
=
2
30
=15%
since its positive, the mixture was sold at a gain of 15%
sandeek0293:
soory your answer is wrong
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