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Given,

Ratio of first, second and third liquid.

First liquid : second liquid : third liquid

2 : 3

4 : 5

Quantity of second quantity will be same, so to make it equal, multiply by 4 in upper no.’s and by 3 in lower no’s

First liquid : second liquid : third liquid

2×4 : 3×4

4×3 : 5×3

8 : 12 : 15

So, Ratio of first, second and third liquid in beverages = 8:12:15

Beverage is of 700 liters

New ratio of liquids in mixture = 6:5:3

So, quantity of first type of liquid in new mixture

quantity of second type of liquid in new mixture

Ratio of first and second type liquid

=6:5