Question

a merchant has coffee with$50 a pound that she wishes to mix with 90 pounds of coffee with $80 a pound to get a mixture that can be sold for $60 a pound . how many pounds of the $50 coffee should be used?

Answer 1

(50)x+90(80)=(60)(x+80)

Answer 2

solve for x

Answer 3

Imran has made a slight error in his reply, it shud b as follows:

Let x pound of $50 be mixed with 90 pound of $ 80
so x(50) + 90 (80) = (x + 90) (60)

50x + 7200 = 60x + 5400
7200 - 5400 = 60x - 50x
1800 = 10x
1800/10 = x

so x = 180

Hence he shud mix 180 pounds of $50 coffee

Answer 4

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