Question

help me?
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 = ________________

Answer 1

1714?

Answer 2

no

Answer 3

yes

Answer 4

...@satellite73 sorry, where did we go wrong?

Answer 5

i am not saying you went wrong, i am saying i don't understand it
the equation given is
\[700A+1200R=1,000,000\]
why the cost should be fixed at 1,000,000 is beyond me, but anyway that is what it says
then it says \(A=1000\) so now the equation is
\[700\times 1000+1200R=1,000,000\] or
\[700,000+1200R=1,000,000\] which i would solve in two steps
1) subtract \(7000,000\) to get
\[1200R=300,000\]
2) then divide by \(1200\) to get
\[R=250\]

Answer 6

thats right..

Answer 7

250 is correct

Answer 8

i take it all back, that's... my bad hey
sorry @satellite73 and @samantha429

Answer 9

lol it's okay, at least you tried :)