Question 713346: The manager of a farmer's market has 300 lb of grain that costs $1.80 per pound. How many pounds of meal costing $0.80 per pound should be mixed with the 300 lb of grain to produce a mixture that costs $1.40 per pound?
Found 2 solutions by nshah11, josgarithmetic:
Answer by nshah11(47)   (Show Source):
Answer by josgarithmetic(39617) (Show Source):
You can put this solution on YOUR website! price or percentage, either is just a kind of strength. This is another example of a more general question. Here, "concentration" means money, dollars.
ASSIGN VARIABLES TO ALL QUANTITIES
L, the lower concentration of available material, $0.80/pound
H, the higher concentration of available material, $1.80/pound
T, the target concentration of resulting mixture, $1.40/pound
x, the amount of lower concentrated material to use, unknown
y, the amount of higher concentrated materaial to use, 300 pounds
 , only x is the unknown. Solve for x, then plug in the given values.
 , substitute the values given into this formula.
|
|
|
