Caffeine Castle buys bulk coffee to sell. The cost of 5 pounds of imported coffee is $60. What is the unit rate in cost per poun
1 answer:
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Step-by-step explanation:
We know that...
x+y (from the first pair) corresponds to 8(in the second pair)..
0 (from the first pair) corresponds to x-y (in the second pair)..
Hence,
By simply adding the two equations we get,
Hence,
By substituting x=4, we get that y=4
Hence,
x=y=4