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 = ________________

Answer 1

Answer: R=250 A=1000

Step-by-step explanation:

Answer 2

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 getR=250