Question 1167532
.
<pre>

Use and solve this "time" equation


    {{{45/x}}} - {{{45/(x+5)}}} = {{{1/10}}}  of an hour  (= 6 minutes).


It is equivalent to

    {{{450/x}}} - {{{450/(x+5)}}} = 1     (1)


and has an obvious solution  x = 45.



<U>CHECK</U>.   {{{450/45}}} - {{{450/(45+5)}}} = {{{450/45}}} - {{{450/50}}} = 10 - 9 = 1.    ! Correct !


Alternatively, you can reduce the equation (1) to quadratic equation and solve it formally.
</pre>


Solved.