Mathematics, 23.09.2019 07:00 krystalhurst97

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

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The cost of coffee is determined by the type of coffee beans that are mixed together. the cost of a...