SOLUTION: How much brand A coffee costing 3.95 per pound should be mixed with 25 pounds of brand b coffee worth 3.60 per pound in order to obtain a mixture worth 3.70 per pound?

Question 232849: How much brand A coffee costing 3.95 per pound should be mixed with 25 pounds of brand b coffee worth 3.60 per pound in order to obtain a mixture worth 3.70 per pound?
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
let a = amount of brand A
.
3.95 a + 3.60 *25 = 3.70 (25 +a)
.
3.95a + 90 = 92.50 +3.70 a
.
.25 a = 2.50
.
a= 10 pounds
.
.
check,,,3.95 *10 + 90 = 92.5 + 3.70 *10
.
39.5 +90 = 92.5 + 37.0
.
129.5 = 129.5,,,,,,,,ok
.

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