Question 746942
The recipe for hummingbird nectar is 4 cups of water for 1 cup sugar.

Write a function that can be used to determine how much sugar I would need to make any number of batches of nectar.

How much sugar do I need to make 4 batches? 11 batches?

Now do the same to determine how much water I would need to make the same numbers of batches.
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W = 4S or
S = W/4 both by volume.
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If a batch is 1 Sugar and 4 Water,
1B = 1S + 4W
n batches = n*(S + 4W)
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I don't know why you'd make batches of liquid.  Mix it in the 4:1 ratio and fill the feeders with however much they hold.
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The birds are migratory.  You'll see as they pass thru, then they'll be gone for months.