Scott has eight CDs, and he picks two to take to work each day. How many different ways can Scott choose two CDs?
2 answers:
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Answer:
There should be 10 l of 25% orange juice and 5 l of 10% orange juice.
Step-by-step explanation:
Let the amount of the 25% orange juice be "x", while the amount of the 10% one be "y". The sum of these must be equal to 15 l, therefore:
The sum of the concentration of juice on each can must be equal to the final product, therefore:
We can now solve the system of equations as shown below:
There should be 10 l of 25% orange juice and 5 l of 10% orange juice.