In a beauty contest,half th number of the experts voted for Mr A and two thirds voted for Mr B.10 voted for both and 6 did not vote for either.How many experts were there in all?​

Respuesta :

Answer

24 experts

Step-by-step explanation:

As shown in the diagram,we let

U=[Total number of experts who voted]

[tex] \implies n(U)=x [/tex]

This implies that the number of experts who voted for Mr A in terms of x is

[tex] \frac{1}{2}x[/tex]

And in terms of x, the number of experts who voted for Mr B is

[tex] \frac{2}{3}x [/tex]

From the diagram, we can write the below equation,

[tex]x= \frac{1}{2}x - 10 + 10 + \frac{2}{3}x - 10 + 6[/tex]

[tex] x - \frac{1}{2}x - \frac{2}{3}x = 4 [/tex]

We multiply through by the L.C.M (is that 6) to get,

[tex]6x - 3x - 2x = 24[/tex]

[tex]x = 24[/tex]

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