The cost of coffee is determined by the type of coffee beans that are mixed together. The cost of a local mix of Arabica and Robusta beans is modeled by the equation below where A = the pounds of Arabica and R = pounds of Robusta.

700A + 1200R = 1,000,000

If a mixture contains 1000 pounds of Arabica beans, how many pounds of Robusta beans should be in the mixture?

R = ________________ pounds

Question

The cost of coffee is determined by the type of coffee beans that are mixed together. The cost of a local mix of Arabica and Robusta beans is modeled by the equation below where A = the pounds of Arabica and R = pounds of Robusta.

700A + 1200R = 1,000,000

If a mixture contains 1000 pounds of Arabica beans, how many pounds of Robusta beans should be in the mixture?

R = ________________ pounds

anonymous · Answer

@helpme1.2

anonymous · Answer

@jollyjolly0

anonymous · Answer

@Isaiah.Feynman

anonymous · Answer

please help medals given

isaiah.feynman · Answer

I think you should read the question and ponder a bit...because the answer is in there.

anonymous · Answer

yes but i dont understand the word prob @Isaiah.Feynman

anonymous · Answer

let me guess its 1200 @Isaiah.Feynman

anonymous · Answer

take your equation,
700A + 1200R = 1,000,000
substitute in your known variable, and solve for the remaining variable.

isaiah.feynman · Answer

When A=1000 what is R? That's the question actually.

anonymous · Answer

1200

isaiah.feynman · Answer

Show me how you got that.

anonymous · Answer

you said its write in the prob. and r=1200 and its asking for r so its 1200

isaiah.feynman · Answer

1200 multiplied by R NOT     R =1200.

anonymous · Answer

so you divide

isaiah.feynman · Answer

This winds down to the algebra |dw:1389146379436:dw|