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 equ
Mathematics
jakefire007
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
Numerical Answers Expected!
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
Numerical Answers Expected!
2 Answer

1. User Answers Anonym
A=1000 so now the equation is
700(1000)+1200R=1,000,000
700,000+1200R=1,000,000
subtract 7000,000 to get:1200R=300,000
then divide by 1200 to get R=250 
2. User Answers royalranger
700A + 1200R = 1,000,000
700(1000) + 1200R = 1,000,000
700,000 + 1200R = 1,000,000
1200R = 300,000
R = 250