Gerald uses (1/5)L of a syrup and some water to make a drink. The amount of water he uses is 3 times the amount of syrup. He then pours the drink into bottles of (1/5)L each. How many bottles of the drink does Gerald have?

Answer 1

so, he uses 1/5 L of syrup
and 3 times that much, or 3/5 L of water.

1/5 + 3/5 = 4/5, so 4 bottles of 1/5 L each.