1.

For any two numbers m , n ; (m+n) : (m-n) : mn = 7: 1: 60 . Find the value of 1/m : 1/nA) 4:3 B) 8:7 C) 3:4 D) 7:8

Answer»

Answer:

3:4 is your answer..

Step-by-step EXPLANATION:

\frac{m+<klux>N</klux>}{m-n}=\frac{7x}{x}  ⇒ \frac{m}{n} =\frac{4x}{3x}

Again <klux>MN</klux> = 12x^2

and mn = 60x

so, 60x = 12x^2  ⇒ x=5

=>  m= 20  and    n= 15

Hence,  \frac{1}{m}:\frac{1}{n} = \frac{1}{20}: \frac{1}{15}= 3:4


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