SOLUTION: Monica Hugo, who is one Crystal's best customers, wants to buy two kinds of beans: Arabian Mocha ($8.50lb) and Colombian Decaf ($8.00lb). If she wants twice as much Mocha as Colom

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Monica Hugo, who is one Crystal's best customers, wants to buy two kinds of beans: Arabian Mocha ($8.50lb) and Colombian Decaf ($8.00lb). If she wants twice as much Mocha as Colom      Log On

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Question 125655: Monica Hugo, who is one Crystal's best customers, wants to buy two kinds of beans: Arabian Mocha ($8.50lb) and Colombian Decaf ($8.00lb). If she wants twice as much Mocha as Colombian decaf, how much of each can she buy for a total of $87.50?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let m = pounds of mocha
Let d = pounds of decaf
8.5m+%2B+8d+=+87.5
m+=+2d
8.5%282d%29+%2B+8d+=+87.5
25d+=+87.5
d+=+3.5
m+=+2d
m+=+7
She can buy 3.5 lb of Mocha and 7 lb of decaf
check:
8.5m+%2B+8d+=+87.5
8.5%2A7+%2B+8%2A3.5+=+87.5
59.5+%2B+28+=+87.5
87.5+=+87.5
OK