Question 972842
Let the two parts be x and y
So, as per ques,
{{{x+y = 39}}}
and {{{(2/3)x + (3/4)y = 28}}}
or, {{{8x + 9y = 28*12}}}
=> {{{8x + 9(39-x) = 336}}}
=> {{{-x = 336 - 351}}}
=> {{{x = 15}}}
So the parts are 15 and 24.