Question 1189104
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In a pre-election poll, residents indicated their voting intentions. 
The number of voters that favored each candidate A, B, and C are known shown.
A: 165
B: 87
C: 48
If 7500 people vote in the election, how many do you expect to vote for
I. A
II. B
III. C
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Informal solution, as your intuition should tell you, is THIS:


<pre>
    add 165 + 87 + 48 = 300.


    So, the answer is  A = {{{(7500/300)*165}}} = 25*165 = 4125

                       B = {{{(7500/300)*165}}} = 25* 87 = 2125

                       C = {{{(7500/300)*165}}} = 25* 48 = 1200.
</pre>


Formal solution is THIS:


<pre>
    7500 = 165x + 87x + 48x

      x  = {{{7500/(165+87+48)}}} = {{{7500/300}}} = 25.


    A = 25*165

    B = 25*87

    C = 25*48


and the final numbers are as above.
</pre>

Solved.