Question 1097373
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Let "x" be the number of $500 bills.

Then the number of the $1000 bills is (26-x).


The condition says

500x = 0.3*(500x + 1000*(26-x)).


Simplify and solve for x:

500x = 150x + 7800 - 300x,

500x - 150x + 300x = 7800,

650x = 7800  ====>  x = {{{7800/650}}} = 12.


<U>Answer</U>.  12 $500 bills and (26-12) = 14 $1000 bills.
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