Answer:
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240 sec + 45 sec= 285 sec
We need 80 liters of 45% alcohol
We have 30% alcohol and 60% alcohol.
This is relatively easy. We need equal amounts of each.
There fore we mix 40 liters of 30% alcohol and 40 liters of 60% alcohol.
LET f(x) = , and consider what happens when the values of x become smaller and smaller. Then the values of f(x) become larger and larger. Eventually, they become larger than any number we might name. We then say that the values of f(x) become infinite or tend to infinity, and that the limit of f(x) as x approaches 0 is infinity.
Now, a limit is a number. But infinity, along with its symbol ∞, is not a number and it is not a place. So to "tend to infinity," or to say that "the limit is infinity," is simply the language we use to describe a propertyof a variable; namely that because its values become larger than any number we might name, they do not approach a limit.
