Given :-
Two bottles contain 40 mL of water.
The ratio of water in each bottle is 3 : 4.
Let the measure of water in each bottle be 3x and 4x.
According to question.
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Now,
The water in each bottle is :-
3x = 3 × 5.71 = 17.13 ml
4x = 4 × 5.71 = 22.84 ml