Respuesta :

This is a comparing base question . We have to compare here both of their works and determine who's work is more efficient by taking LCM of 7/10 and 9/15.

Now the man can do 7/10 parts of piece of a work in a day and The wife can do 9/15 part of the same work in a day.

Now we shall take the LCM of 10 and 15 which is 30 then we have

[tex]\frac{7}{10}=\frac{7\times3}{10\times3}=\frac{21}{30},\text{ }\frac{9}{15}=\frac{9\times2}{15\times2}=\frac{18}{30}[/tex]

So we get

[tex]\frac{21}{30}>\frac{18}{30}[/tex]

Hence the man has better working efficiency than his wife.

RELAXING NOICE
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