Question 1132272
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<pre>
Let "x" be the C's capital (the value under the question).


Then you have this equation (proportion) from the condition


    {{{x/(5000+25000+x)}}} = {{{1500/3500}}},     (1)


or, equivalently


    {{{x/(5000+25000+x)}}} = {{{3/7}}}.


Cross-multiply and then simplify and solve for x:


    7x = 3*(5000+25000+x)


    7x = 90000 + 3x


    4x = 90000  ====>  x = {{{90000/4}}} = 22500.     <U>ANSWER</U>


<U>CHECK</U>.  Substitute the found value of x into equation (1)

        {{{22500/(5000+25000+22500)}}} = {{{22500/52500}}} = {{{45/105}}} = {{{3/7}}}.    ! Correct !
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Solved.