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What does a 1:1 ratio mean?
##1:1## ratio is 1 part or 1 unit of a particular quantity.
for example
- two bottles of water both having 2 liters of water each the ratio will be ##2/2 = 1/1 = 1:1##
- two boxes both having 50 grams of butter each the ratio will be ##50/50 = 1/1 = 1:1##