UGC NET Math Reasoning Q22

Question

Three glasses are filled with a mixture of milk and water in the ratio 4: 3,5: 4 and 7: 6 respectively. If the contents of three glasses are poured into a single vessel. then the ratio of water to milk in the new vessel is:

Accepted Answer

$( \frac{3}{7} + \frac{4}{9} + \frac{6}{13} ) : ( \frac{4}{7} + \frac{5}{9} + \frac{7}{13} )$