SOLUTION: A company has a fruit mixture worth $6 per pound is mixed with nuts worth $11 per pound to get 50 pounds of a trail mixture worth $7.40 per pound. How much of each (fruits & nuts)

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Question 157873: A company has a fruit mixture worth $6 per pound is mixed with nuts worth $11 per pound to get 50 pounds of a trail mixture worth $7.40 per pound. How much of each (fruits & nuts) was used to create this trail mix? Show the system of equations used to solve this. On this problem I know that the mixture is worth $7.40 per pound after mixing, and the 50 pounds of mixture is worth $370 total. I am just sure what to do from there.
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
Remember the following:
Quantity in pounds:
Fruit+Mixture=x=6%2Flb
Nuts=y=11%2Flb
TrailMixture=z=%287.40%2Flb%29 @ 50lbs total
We have to remember when we mix the fruits and nuts we have Trail Mixture:
x%2By=z
x%2By=50lbs ------------------------------------> eqn 1
In eqn 1 we get, highlight%28y=50-x%29 ----------------------> eqn 2
.
Also, we know the cost per material so when multiplied bu the quantity (lbs) we get total of 50 lbs @ $7.40/lb. To show in eqn:
%286%2Flb%29x%2B%2811%2Flb%29highlight%28y%29=%287.40%2Flb%29%2850lbs%29--------------> eqn 3
Substitute eqn 2 in eqn 3: see highlight%28y%29
6x%2B11%2850-x%29=370
6x%2B550-11x=370
550-370=11x-6x
180=5x ------> cross%28180%2936lbs%2Fcross%285%29=cross%285%29x%2Fcross%285%29
x=36lbs ---------------------> this much of highlight%28FRUITS%29 mixed
In eqn 2:
y=50-36=14lbs ---------------> this much of highlight%28NUTS%29 mixed
In doubt? go back eqn 3:
%286%29%2836%29%2B%2811%29%2814%29=%287.40%29%2850%29
216%2B154=370
370=370
Thank you,
Jojo